public ActionResult MyBooking()
        {
            if (Session["cancelVM"] == null)
            {
                return(RedirectToAction("Index", "Cancel"));
            }

            CancelVM cancelVM = (CancelVM)Session["cancelVM"];

            cancelVM.Booking = BookingManager.GetBooking(cancelVM.Firstname, cancelVM.Lastname);
            return(View(cancelVM));
        }
        public ActionResult Index(CancelVM cancelVM)
        {
            if (ModelState.IsValid)
            {
                List <Booking> booking = BookingManager.GetBooking(cancelVM.Firstname, cancelVM.Lastname);

                if (booking.Count == 0)
                {
                    ModelState.AddModelError(string.Empty, "No booking with this name");
                    return(View());
                }

                cancelVM.Dates   = booking.Select(x => x.Date).Distinct().ToList();
                cancelVM.Booking = booking;

                Session["CancelVM"] = cancelVM;
                return(RedirectToAction("MyBooking"));
            }
            return(View());
        }