diff --git a/Hotel/HotelDataModels/HotelDataModels.csproj b/Hotel/HotelDataModels/HotelDataModels.csproj
index 962b8f6..27ac386 100644
--- a/Hotel/HotelDataModels/HotelDataModels.csproj
+++ b/Hotel/HotelDataModels/HotelDataModels.csproj
@@ -6,8 +6,4 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Folder Include="Models\" />
-  </ItemGroup>
-
 </Project>
diff --git a/Hotel/HotelDataModels/Models/IAdministratorModel.cs b/Hotel/HotelDataModels/Models/IAdministratorModel.cs
new file mode 100644
index 0000000..ec7a9f1
--- /dev/null
+++ b/Hotel/HotelDataModels/Models/IAdministratorModel.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IAdministratorModel : IId
+	{
+		string AdministratorFIO {  get; }
+		string AdministratorPhone { get; }
+		string HeadwaiterLogin { get; }
+		string HeadwaiterPassword { get; }
+	}
+}
diff --git a/Hotel/HotelDataModels/Models/IConferenceBookingModel.cs b/Hotel/HotelDataModels/Models/IConferenceBookingModel.cs
new file mode 100644
index 0000000..e8de827
--- /dev/null
+++ b/Hotel/HotelDataModels/Models/IConferenceBookingModel.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IConferenceBookingModel : IId
+	{
+		int AdministratorId { get; }
+		int? ConferenceId { get; }
+		string PlaceСonference { get; }
+		DateTime? DateСonference { get; }
+		public Dictionary<int, IDinnerModel> ConferenceBookingDinners { get; }
+
+	}
+}
diff --git a/Hotel/HotelDataModels/Models/IDinnerModel.cs b/Hotel/HotelDataModels/Models/IDinnerModel.cs
new file mode 100644
index 0000000..a63cc60
--- /dev/null
+++ b/Hotel/HotelDataModels/Models/IDinnerModel.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IDinnerModel : IId
+	{
+		string DinnerName { get; }
+		int DinnerСalorieСontent { get; }
+		double DinnerPrice { get; }
+		int AdministratorId { get; }
+	}
+}
diff --git a/Hotel/HotelDataModels/Models/IRoomModel.cs b/Hotel/HotelDataModels/Models/IRoomModel.cs
new file mode 100644
index 0000000..8fe3151
--- /dev/null
+++ b/Hotel/HotelDataModels/Models/IRoomModel.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HotelDataModels.Models
+{
+	public interface IRoomModel : IId
+	{
+		int RoomNumber { get; }
+		int CountBeds { get; }
+		double RoomPrice { get; }
+		int AdministratorId { get; }
+		public Dictionary<int, IDinnerModel> RoomDinners { get; }
+	}
+}