diff --git a/oop/NormfallStudie/Plattform/Helper/EntitiesContextInitializer.cs b/oop/NormfallStudie/Plattform/Helper/EntitiesContextInitializer.cs
index 97c0f2d..913b1de 100644
--- a/oop/NormfallStudie/Plattform/Helper/EntitiesContextInitializer.cs
+++ b/oop/NormfallStudie/Plattform/Helper/EntitiesContextInitializer.cs
@@ -7,14 +7,18 @@ namespace Plattform.Helper
     {
         protected override void Seed(Context context)
         {
-            var cities = GenerateData.CreateCities();
+            //var cities = GenerateData.CreateCities();
+            var types = GenerateData.CreateRoomTypes();
 
-            foreach (var c in cities)
+            //foreach (var c in cities)
+            //{
+            //    context.Cities.Add(c);
+            //}
+            foreach (var t in types)
             {
-                context.Cities.Add(c);
+                context.RoomTypes.Add(t);
             }
             context.SaveChanges();
-
         }
     }
 }
\ No newline at end of file
diff --git a/oop/NormfallStudie/Plattform/Helper/GenerateData.cs b/oop/NormfallStudie/Plattform/Helper/GenerateData.cs
index 5cd7b38..86fa81d 100644
--- a/oop/NormfallStudie/Plattform/Helper/GenerateData.cs
+++ b/oop/NormfallStudie/Plattform/Helper/GenerateData.cs
@@ -7,9 +7,30 @@ namespace Plattform.Helper
 {
     public static class GenerateData
     {
-        private static ICollection<City> Cities;
-        public static ICollection<City> CreateCities()
+        private static List<City> Cities = new List<City>();
+        private static List<RoomType> RoomTypes = new List<RoomType>();
+        private static List<string> ListRoomTypes = new List<string>(new string[]
         {
+            "Single Bed", "Double Bed", "Suite"
+        });
+        private static List<string> ListCities = new List<string>(new string[]
+        {
+            "Bern"
+        });
+        public static List<RoomType> CreateRoomTypes()
+        {
+            foreach (var item in ListRoomTypes)
+            {
+                RoomTypes.Add(new RoomType(item));
+            }
+            return RoomTypes;
+        }
+        public static List<City> CreateCities()
+        {
+            foreach (var item in ListCities)
+            {
+                Cities.Add(new City(item, 3300, "xtz"));
+            }
             return Cities;
         }
     }
diff --git a/oop/NormfallStudie/Plattform/Models/Airline.cs b/oop/NormfallStudie/Plattform/Models/Airline.cs
index 1461185..21b481f 100644
--- a/oop/NormfallStudie/Plattform/Models/Airline.cs
+++ b/oop/NormfallStudie/Plattform/Models/Airline.cs
@@ -19,4 +19,4 @@ namespace Plattform.Models
             this.Name = airline.Name;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/oop/NormfallStudie/Plattform/Models/Availability.cs b/oop/NormfallStudie/Plattform/Models/Availability.cs
index c866505..cec46a4 100644
--- a/oop/NormfallStudie/Plattform/Models/Availability.cs
+++ b/oop/NormfallStudie/Plattform/Models/Availability.cs
@@ -13,6 +13,10 @@ namespace Plattform.Models
         public DateTime From { get; set; }
         [DataMember]
         public DateTime To { get; set; }
+        [DataMember]
+        bool Reserved { get; set; }
+        [DataMember]
+        bool Booked { get; set; }
         public ICollection<Room> Rooms { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/oop/NormfallStudie/Plattform/Models/City.cs b/oop/NormfallStudie/Plattform/Models/City.cs
index 7f3c512..ededc14 100644
--- a/oop/NormfallStudie/Plattform/Models/City.cs
+++ b/oop/NormfallStudie/Plattform/Models/City.cs
@@ -13,5 +13,12 @@ namespace Plattform.Models
         public int ZipCode { get; set; }
         [DataMember]
         public string ShortName { get; set; }
+        public City() { }
+        public City(string name, int zipCode, string shortName)
+        {
+            this.Name = name;
+            this.ZipCode = zipCode;
+            this.ShortName = shortName;
+        }
     }
-}
\ No newline at end of file
+}
diff --git a/oop/NormfallStudie/Plattform/Models/Flight.cs b/oop/NormfallStudie/Plattform/Models/Flight.cs
index d189815..ec7876d 100644
--- a/oop/NormfallStudie/Plattform/Models/Flight.cs
+++ b/oop/NormfallStudie/Plattform/Models/Flight.cs
@@ -31,4 +31,4 @@ namespace Plattform.Models
             this.ToCityShortName = flight.ToCityShortName;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/oop/NormfallStudie/Plattform/Models/Hotel.cs b/oop/NormfallStudie/Plattform/Models/Hotel.cs
index 1405a22..8fa77a2 100644
--- a/oop/NormfallStudie/Plattform/Models/Hotel.cs
+++ b/oop/NormfallStudie/Plattform/Models/Hotel.cs
@@ -12,4 +12,4 @@ namespace Plattform.Models
         [DataMember]
         public City City { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/oop/NormfallStudie/Plattform/Models/Room.cs b/oop/NormfallStudie/Plattform/Models/Room.cs
index 128ad56..f91910f 100644
--- a/oop/NormfallStudie/Plattform/Models/Room.cs
+++ b/oop/NormfallStudie/Plattform/Models/Room.cs
@@ -15,4 +15,4 @@ namespace Plattform.Models
         [DataMember]
         public ICollection<Availability> Availability { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/oop/NormfallStudie/Plattform/Models/RoomAvailability.cs b/oop/NormfallStudie/Plattform/Models/RoomAvailability.cs
index 36fc5a9..412350c 100644
--- a/oop/NormfallStudie/Plattform/Models/RoomAvailability.cs
+++ b/oop/NormfallStudie/Plattform/Models/RoomAvailability.cs
@@ -2,9 +2,14 @@
 
 namespace Plattform.Models
 {
+    [DataContract]
     public class RoomAvailability
     {
+        [DataMember]
         public Room Room;
+        [DataMember]
         public Availability Availability;
+        [DataMember]
+        public Customer Customer;
     }
-}
\ No newline at end of file
+}
diff --git a/oop/NormfallStudie/Plattform/Models/RoomType.cs b/oop/NormfallStudie/Plattform/Models/RoomType.cs
index e98234c..733b683 100644
--- a/oop/NormfallStudie/Plattform/Models/RoomType.cs
+++ b/oop/NormfallStudie/Plattform/Models/RoomType.cs
@@ -9,5 +9,10 @@ namespace Plattform.Models
         public int RoomTypeID { get; set; }
         [DataMember]
         public string Name { get; set; }
+        public RoomType() { }
+        public RoomType(string name)
+        {
+            this.Name = name;
+        }
     }
-}
\ No newline at end of file
+}