diff --git a/.gitignore b/.gitignore
index 5e1422c9c..c0ac3dc53 100644
--- a/.gitignore
+++ b/.gitignore
@@ -48,3 +48,4 @@ build-iPhoneSimulator/
 
 # unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
 .rvmrc
+coverage
diff --git a/lib/date_range.rb b/lib/date_range.rb
new file mode 100644
index 000000000..bd1e176ad
--- /dev/null
+++ b/lib/date_range.rb
@@ -0,0 +1,44 @@
+require "date"
+
+#  - I can view a list of rooms that are not reserved for a given date range, so that I can see all available rooms for that day
+#   - I can make a reservation of a room for a given date range, and that room will not be part of any other reservation overlapping that date range
+#   - I want an exception raised if I try to reserve a room during a date range when all rooms are reserved, so that I cannot make two reservations for the same room that overlap by date
+
+class Date_Range
+  attr_reader :check_in_date, :check_out_date
+
+  # this is were we will handle the date, taking in the check in date and out date
+  # if the check out date is more higher that checking in date the date is invalide
+  # Example 2001,2 3 > 2001 2,4
+  def initialize(check_in_date, check_out_date)
+    unless check_out_date > check_in_date
+      raise ArgumentError, "These dates are invalid."
+    end
+    @check_in_date = check_in_date
+    @check_out_date = check_out_date
+  end
+
+  # every time Date_Range is called it takes in check in and out dates as parms
+  # setting check_in and check_out allows me to compare two date ranges for overlap
+  # if there is no overlap then return false
+  # Example 2001,2 3 2001 2,4
+  def overlaps_in_reservations?(new_date_range)
+    if (new_date_range.check_in_date >= @check_out_date) || (new_date_range.check_out_date <= @check_in_date)
+      return false
+    else
+      return true
+    end
+  end
+
+  def number_of_nights?
+    return @check_out_date - @check_in_date
+  end
+end
+
+# def contains(date)
+#   if date >= @check_in_date && date < @check_out_date
+#     return true
+#   else
+#     return false
+#   end
+# end
diff --git a/lib/hotel_block.rb b/lib/hotel_block.rb
new file mode 100644
index 000000000..2f834945a
--- /dev/null
+++ b/lib/hotel_block.rb
@@ -0,0 +1,23 @@
+class Hotel_Block < Date_Range
+  attr_accessor :room_info, :check_in_date, :check_out_date, :room_rate
+
+  def initialize(room_ids, check_in_date, check_out_date, room_rate, hotel_block_id)
+    # room_info maps a room_id to whether it has been occupied or not. So to begin with, all rooms in a hotel block are not occupied. They are set to a value of false, indicating that they are not occupied.
+    @room_info =
+      h = Hash[*room_ids.collect { |room_ids| [room_ids, (false)] }.flatten]
+    @check_in_date = check_in_date
+    @check_out_date = check_out_date
+    @room_rate = room_rate
+    @hotel_block_id = hotel_block_id
+  end
+
+  def check_rooms_available
+    @room_info.each do |room_id, occupied|
+      # If a room has occupied set to false, we know it is available.
+      if occupied == false
+        return true
+      end
+    end
+    return false
+  end
+end
diff --git a/lib/hotel_dispatcher.rb b/lib/hotel_dispatcher.rb
new file mode 100644
index 000000000..363b0a8a6
--- /dev/null
+++ b/lib/hotel_dispatcher.rb
@@ -0,0 +1,102 @@
+require "date"
+require "pry"
+require_relative "date_range"
+require_relative "reservation"
+require_relative "room"
+require_relative "hotel_block"
+
+class HotelManager < Date_Range
+  attr_reader :rooms
+  attr_accessor :reservations
+
+  def initialize
+    @rooms = make_rooms
+    @hotel_blocks = []
+    @hotel_block_counter = 0
+  end
+
+  # - The hotel has 20 rooms, and they are numbered 1 through 20
+  # - In this method we   make a rooms spanning 1 - 20
+  # - Each room is placed in an array which because an room array
+  def make_rooms
+    room_array = []
+    (1..20).each do |room_num|
+      room_array << Room.new(room_num)
+    end
+    return room_array
+  end
+
+  # Here we check the room availability by taking in the check in and out date as parms
+  # Those parms are then used to create a new Instantation of a date range
+  # By setting that new instantion of a date range as a variable we can then
+  # Go into each room and check that said date range
+  def check_room_available?(check_in_date, check_out_date)
+    date_range = Date_Range.new(check_in_date, check_out_date)
+    @rooms.each do |room|
+      # If no res has any overlap return true #
+      if room.check_overlap_with_room_reservations(date_range)
+        return true
+      end
+    end
+    # However if there is return false because there is a overlap. No room available whatsoever#
+    return false
+  end
+
+  def find_all_resevations
+    all_res = []
+    @rooms.each do |room|
+      room.reservations.each do |res|
+        all_res << res
+      end
+    end
+    all_res << @hotel_blocks
+    return all_res
+  end
+
+  def create_reservation(check_in_date, check_out_date)
+    # Need to determine if which room to use for the reservation.
+
+    # Iterate over list of rooms.
+    # Find room that has availability.
+    # First room that has no time conflict is the room, we choose to use for the reservation.
+    # If no rooms have availability during the checkin_date to checkout_date, we should return an error/ raise an error.
+
+    date_range = Date_Range.new(check_in_date, check_out_date)
+    @rooms.each do |room|
+      # If no res has any overlap return true #
+      if room.check_overlap_with_room_reservations(date_range)
+        room.create_new_reservation(check_in_date, check_out_date)
+        return true
+      end
+    end
+    # # Raise exception as no room is available during the requested date_range.
+    raise Exception.new "There are no rooms available for this date range"
+  end
+
+  # This method is used to create a Hotel Block
+  # Takes in Room Ids and check in and check out date
+  # inside the method we create a method we create a variable called new requested_date_range which uses the Date_Range class
+  # room_ids is the number of rooms
+  # need to raise error if more than 5 rooms
+  # using the make rooms we
+  def create_room_block(room_ids, check_in_date, check_out_date, room_rate)
+    requested_date_range = Date_Range.new(check_in_date, check_out_date)
+    room_ids.each do |room_id|
+      room = @rooms[room_id]
+      if !room.check_overlap_with_room_reservations(requested_date_range)
+        raise Exception.new "One of the rooms in the hotel block requested is unavailable"
+      end
+    end
+
+    # Go to each room and add the reservation for the given date range
+      # room_ids.each do |room_id|
+      #   room = @rooms[room_id]
+      #   room.create_new_reservation(check_in_date, check_out_date, true)
+      # end
+  
+
+    # Create the HotelBlock object and add it to the list of hotel_blocks
+    @hotel_blocks << Hotel_Block.new(room_ids, check_in_date, check_out_date, room_rate, @hotel_block_counter)
+    @hotel_block_counter += 1
+  end
+end
diff --git a/lib/reservation.rb b/lib/reservation.rb
new file mode 100644
index 000000000..2a9760b99
--- /dev/null
+++ b/lib/reservation.rb
@@ -0,0 +1,31 @@
+require_relative "date_range"
+
+class Reservation < Date_Range
+  attr_accessor :room_num, :check_in_date, :check_out_date
+
+  def initialize(room_num, check_in_date, check_out_date, hotel_block_reservation = false)
+    @room = room_num
+    @check_in_date = check_in_date
+    @check_out_date = check_out_date
+    @hotel_block_reservation = hotel_block_reservation
+  end
+
+  #each time the employee creates a reservation it is created here
+
+  # Every room is identical, and a room always costs $200/night
+  def total_cost_for_stay
+    number_of_nights? * 200
+  end
+end
+
+#  take in the Room class add_res method, converts date range into number of nights, each night * $200 less the one night
+#   def number_of_nights?
+#     @room.add_reservation(check_in_date, check_out_date)
+#     num_of_nights = check_out_date - check_in_date - 1
+#     return num_of_nights.to_i
+#   end
+
+#   def total
+#     total_cost_for_stay = number_of_nights? * 200
+#     return total_cost_for_stay
+#   end
diff --git a/lib/room.rb b/lib/room.rb
new file mode 100644
index 000000000..67b7b8b65
--- /dev/null
+++ b/lib/room.rb
@@ -0,0 +1,27 @@
+# require_relative 'date_range'
+# require_relative 'reservation'
+
+class Room < Date_Range
+  # currently a room is only a room
+  attr_accessor :reservations, :room_num
+
+  def initialize(room_num)
+    @room_num = room_num
+    @reservations = []
+  end
+
+  def check_overlap_with_room_reservations(requested_date_range)
+    # check if the check_in and check_out date overlaps with any other reservations for the room.
+    # Return true if no reservation conflicts with the checkin and checkout date.
+    if !@reservations.any? { |res| res.overlaps_in_reservations?(requested_date_range) }
+      return true
+    end
+    return false
+  end
+
+  def create_new_reservation(check_in_date, check_out_date, hotel_block_reservation = false)
+    new_res = Reservation.new(room_num, check_in_date, check_out_date, hotel_block_reservation)
+    @reservations << new_res
+    return new_res
+  end
+end
diff --git a/test/date_range_test.rb b/test/date_range_test.rb
new file mode 100644
index 000000000..35caa33a3
--- /dev/null
+++ b/test/date_range_test.rb
@@ -0,0 +1,109 @@
+#date range (1) 2001,2,1 - 2001, 2,10    9 nights
+#date range (2) 2001,2,1 - 2001, 2,4     3 nights
+#date range (3) 2001,1,31 - 2001,2,4    4 nights
+#date range (4) 2001,2,4 - 2001, 2,8    4 nights
+#date range (5) 2001,2,8 - 2001, 2,10   2 nights
+#date range (6) 2001,2,8 - 2001, 2,12   4 nights
+#date range (7) 2001,2,12 - 2001,2,14   4 nights
+
+require_relative "test_helper"
+
+describe "Instanitates a new Date Range" do
+  let(:check_in_date) { Date.new(2001, 2, 1) }
+  let(:check_out_date) { Date.new(2001, 2, 3) }
+
+  it "Initialize Date Range" do
+    new_date = Date_Range.new(check_in_date, check_out_date)
+    expect(new_date).must_be_kind_of Date_Range
+  end
+
+  describe "Checks Overlaps" do
+    let(:check_in_date) { Date.new(2001, 2, 1) }
+    let(:check_out_date) { Date.new(2001, 2, 4) }
+    let(:date_range_1) { Date_Range.new(check_in_date, check_out_date) }
+
+    it "both date ranges are the exact same" do
+      #  Arrange
+      date_range_2 = Date_Range.new(check_in_date, check_out_date)
+      #  Act
+      test_date_range = date_range_1.overlaps_in_reservations?(date_range_2)
+      #  Assert
+      expect(test_date_range).must_equal true
+    end
+
+    it " New date range fails within current date range" do
+      #  Arrange
+      start_two = Date.new(2001, 2, 2)
+      end_two = Date.new(2001, 2, 3)
+      date_range_2 = Date_Range.new(start_two, end_two)
+      #  Act
+      test_date_range = date_range_1.overlaps_in_reservations?(date_range_2)
+      #  Assert
+      expect(test_date_range).must_equal true
+    end
+
+    it "New date range starts before current date range - ends after after current check in" do
+      #  Arrange
+      start_two = Date.new(2001, 1, 31)
+      end_two = Date.new(2001, 2, 2)
+      date_range_2 = Date_Range.new(start_two, end_two)
+      #  Act
+      test_date_range = date_range_1.overlaps_in_reservations?(date_range_2)
+      #  Assert
+      expect(test_date_range).must_equal true
+    end
+
+    it "New date range check in starts prior to current date range end - ends after " do
+      #  Arrange
+      start_two = Date.new(2001, 2, 3)
+      end_two = Date.new(2001, 2, 6)
+      date_range_2 = Date_Range.new(start_two, end_two)
+      #  Act
+      test_date_range = date_range_1.overlaps_in_reservations?(date_range_2)
+      #  Assert
+      expect(test_date_range).must_equal true
+    end
+
+    it "New date range spans the length of the whole current reservation " do
+      #  Arrange
+      start_two = Date.new(2001, 2, 3)
+      end_two = Date.new(2001, 2, 6)
+      date_range_2 = Date_Range.new(start_two, end_two)
+      #  Act
+      test_date_range = date_range_1.overlaps_in_reservations?(date_range_2)
+      #  Assert
+      expect(test_date_range).must_equal true
+    end
+
+    it " New range check in same as check out for current - Return False" do
+      #  Arrange
+      start_two = Date.new(2001, 2, 4)
+      end_two = Date.new(2001, 2, 7)
+      date_range_2 = Date_Range.new(start_two, end_two)
+      #  Act
+      test_date_range = date_range_1.overlaps_in_reservations?(date_range_2)
+      #  Assert
+      expect(test_date_range).must_equal false
+    end
+
+    it " New date check in end before current check in" do
+      #  Arrange
+      start_two = Date.new(2001, 1, 28)
+      end_two = Date.new(2001, 2, 1)
+      date_range_2 = Date_Range.new(start_two, end_two)
+      #  Act
+      test_date_range = date_range_1.overlaps_in_reservations?(date_range_2)
+      #  Assert
+      expect(test_date_range).must_equal false
+    end
+    describe "Calulates number of nights " do
+      let(:check_in_date) { Date.new(2001, 2, 3) }
+      let(:check_out_date) { Date.new(2001, 2, 6) }
+
+      it "Correctly calulates number of nights" do
+        res = Reservation.new(Room.new(1), check_in_date, check_out_date)
+        expect(res.number_of_nights?).must_equal 3
+      end
+    end
+  end # inside describe
+end # top describe
diff --git a/test/hotel_block_test.rb b/test/hotel_block_test.rb
new file mode 100644
index 000000000..0082cac85
--- /dev/null
+++ b/test/hotel_block_test.rb
@@ -0,0 +1,29 @@
+require_relative "test_helper"
+
+describe "Instanitates a new Hotel Block" do
+  let(:room_ids) { 5 }
+  let(:room_info) { 5 }
+  let(:hotel_block_id) { 101 }
+  let(:room_rate) { 150 }
+  let(:check_in_date) { Date.new(2001, 2, 1) }
+  let(:check_out_date) { Date.new(2001, 2, 3) }
+
+  it "Initialize Hotel Block" do
+    room_ids = [1, 2, 3, 4, 5]
+    new_hotel_block = Hotel_Block.new(room_ids, check_in_date, check_out_date, room_rate, hotel_block_id)
+    expect(new_hotel_block).must_be_kind_of Hotel_Block
+  end
+
+  it "Correctly show Check room availablity as occupied" do
+    room_ids = [1, 2, 3, 4, 5]
+    new_hotel_block = Hotel_Block.new(room_ids, check_in_date, check_out_date, room_rate, hotel_block_id)
+    expect(new_hotel_block.check_rooms_available).must_equal true
+  end
+
+  it "Correctly show Check room availablity as occupied" do
+    room_ids = [1, 2, 3, 4, 5]
+    new_hotel_block = Hotel_Block.new(room_ids, check_in_date, check_out_date, room_rate, hotel_block_id)
+    new_hotel_block.room_info = {1=> true,2=> true,3=> true,4=> true,5=> true}
+    expect(new_hotel_block.check_rooms_available).must_equal false
+  end
+end
diff --git a/test/hotel_dispatcher_test.rb b/test/hotel_dispatcher_test.rb
new file mode 100644
index 000000000..cb0c3e273
--- /dev/null
+++ b/test/hotel_dispatcher_test.rb
@@ -0,0 +1,85 @@
+require_relative "test_helper"
+require "hotel_dispatcher"
+
+describe "HotelDispatcher class" do
+  def build_test_dispatcher
+    HotelManager.new
+  end
+
+  describe "Initializer" do
+    it "is an instance of HotelDispatcher" do
+      hotel_dispatcher = build_test_dispatcher
+      expect(hotel_dispatcher).must_be_kind_of HotelManager
+    end
+
+    it "can makes all rooms" do
+      hotel_dispatcher = build_test_dispatcher
+      room_array = hotel_dispatcher.make_rooms
+      expect(room_array.length).must_equal 20
+    end
+  end
+
+  describe "Can create a reservation" do
+    let(:room_ids) { 5 }
+    let(:room_info) { 5 }
+    let(:hotel_block_id) { 101 }
+    let(:room_rate) { 150 }
+    let(:check_in_date) { Date.new(2001, 2, 3) }
+    let(:check_out_date) { Date.new(2001, 2, 6) }
+
+    it "Return true if reservation is can be created" do
+      hotel_dispatcher = build_test_dispatcher
+      hotel_dispatcher.make_rooms
+      new_res = hotel_dispatcher.create_reservation(check_in_date, check_out_date)
+      expect(new_res).must_equal true
+    end
+
+    it "Raises error if no reservation available " do
+      hotel_dispatcher = build_test_dispatcher
+      hotel_dispatcher.rooms.each do |room|
+        room.create_new_reservation(Date.today, Date.today + 3)
+      end
+      expect { new_res = hotel_dispatcher.create_reservation(Date.today, Date.today + 3) }.must_raise Exception
+    end
+  end
+
+  describe "Can create a Hotel room block??????" do
+    let(:check_in_date) { Date.new(2001, 2, 3) }
+    let(:check_out_date) { Date.new(2001, 2, 6) }
+    it "Raise expection if reservation is can't be created" do
+      hotel_dispatcher = build_test_dispatcher
+      room_ids = [1, 2, 3]
+      hotel_dispatcher.rooms.each do |room|
+        room.create_new_reservation(Date.today, Date.today + 3)
+      end
+      expect { new_res = hotel_dispatcher.create_room_block(room_ids, Date.today, Date.today + 3, 150) }.must_raise Exception
+    end
+    # it "Creates a successfull room block" do
+
+    # end
+
+    it "Check room availablity " do
+      hotel_dispatcher = build_test_dispatcher
+
+      hotel_dispatcher.rooms.each do |room|
+        room.create_new_reservation(Date.today, Date.today + 3, hotel_block_reservation = false)
+      end
+      results = hotel_dispatcher.check_room_available?(Date.today, Date.today + 3)
+      expect(results).must_equal false
+    end
+  end
+  describe " Find all res" do
+    it "finds all res" do
+      hotel_dispatcher = build_test_dispatcher
+      all_res = []
+      hotel_dispatcher.rooms.each do |room|
+        all_res << room.create_new_reservation(Date.today, Date.today + 3, hotel_block_reservation = false)
+      end
+      find_all = hotel_dispatcher.find_all_resevations
+      all_res.each do |res|
+        expect(find_all).must_include res
+      end
+    end
+  end
+end
+
diff --git a/test/reservation_test.rb b/test/reservation_test.rb
new file mode 100644
index 000000000..1c65a09c5
--- /dev/null
+++ b/test/reservation_test.rb
@@ -0,0 +1,18 @@
+require "date"
+require_relative "test_helper"
+
+describe "Reservation class" do
+  describe "Initializer" do
+    let(:check_in_date) { Date.new(2001, 2, 3) }
+    let(:check_out_date) { Date.new(2001, 2, 6) }
+    it "is an instance of Reservation" do
+      res = Reservation.new(Room.new(1), check_in_date, check_out_date)
+      expect(res).must_be_kind_of Reservation
+    end
+
+    it "takes in the date" do
+      res = Reservation.new(Room.new(1), check_in_date, check_out_date)
+      expect(res.total_cost_for_stay).must_equal 600
+    end
+  end
+end
diff --git a/test/room_test.rb b/test/room_test.rb
new file mode 100644
index 000000000..304bdf77b
--- /dev/null
+++ b/test/room_test.rb
@@ -0,0 +1,30 @@
+require_relative "test_helper"
+
+describe "Room class" do
+  describe "Initializer" do
+    let(:check_in_date) { Date.new(2001, 2, 1) }
+    let(:check_out_date) { Date.new(2001, 2, 3) }
+    let(:date_range_1) { Date_Range.new(check_in_date, check_out_date) }
+    it "is an instance of Room" do
+      test_room = Room.new(1)
+      expect(test_room).must_be_kind_of Room
+    end
+
+    it "Can create mutliple reservations for 1 room" do
+      room = Room.new(1)
+      all_res = []
+      5.times do |index|
+        all_res << room.create_new_reservation(Date.today, Date.today + 3, hotel_block_reservation = false)
+      end
+      expect(all_res.length).must_equal 5
+    end
+
+    it "Can check overlap within rooms" do
+      room = Room.new(1)
+      requested_date_range = Date_Range.new(check_in_date, check_out_date)
+      room.create_new_reservation(check_in_date, check_out_date, hotel_block_reservation = false)
+      all_res = room.check_overlap_with_room_reservations(requested_date_range)
+      expect(all_res).must_equal false
+    end
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index c3a7695cf..952c0ff52 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,8 +1,16 @@
-# Add simplecov
+require "simplecov"
+SimpleCov.start
+
 require "minitest"
 require "minitest/autorun"
 require "minitest/reporters"
+require "minitest/skip_dsl"
 
 Minitest::Reporters.use! Minitest::Reporters::SpecReporter.new
 
 # require_relative your lib files here!
+# test/test_helper.rb
+# require_relative "/lib/hotel_block.rb"
+# require_relative "/lib/date_range.rb"
+# require_relative "/lib/hotel_dispatch.rb"
+# require_relative "/lib/reservation.rb"