Index: src/app/models/vehicle-availability.model.ts
===================================================================
--- src/app/models/vehicle-availability.model.ts	(revision fb5575bddc2874daee6e699772fc19916556610a)
+++ src/app/models/vehicle-availability.model.ts	(revision fb5575bddc2874daee6e699772fc19916556610a)
@@ -0,0 +1,6 @@
+import { Vehicle } from './vehicle.model';
+
+export interface VehicleAvailability extends Vehicle {
+  isAvailable: boolean;
+  conflictingDeliveryId?: number;
+}
Index: src/app/services/manager.service.ts
===================================================================
--- src/app/services/manager.service.ts	(revision b5b5931bfb0cc39e2f0a1ff90ef706c1d08b11c7)
+++ src/app/services/manager.service.ts	(revision fb5575bddc2874daee6e699772fc19916556610a)
@@ -62,5 +62,4 @@
 }
 
-
   getAvailableVehicles(deliveryDate?: string): Observable<Vehicle[]> {
   let params = new HttpParams();