public IActionResult AddReservation(int id)
        {
            var model = reservationService.BusSeatsByTripId(id);

            model.AdditionalServices = reservationService.AdditionalServicesByTripId(id);
            model.TourTitle          = reservationService.GetTourName(id);
            model.BasePrice          = reservationService.GetBasePrice(id);
            model.TripStartDate      = reservationService.GetStartDate(id);
            return(View(model));
        }