public BookingController(BookingServiceFacade bookingFacade)
 {
    _bookingFacade = bookingFacade;         
 }
 public BookingController(BookingServiceFacade bookingFacade, RoutingFacade routingFacade, IBus bus)
 {
    _bookingFacade = bookingFacade;
    _routingFacade = routingFacade;
    _bus = bus;
 }