public ActionResult Edit(int id)
        {
            Flights flights = flightRepository.GetFlightById(id);

            if (flights == null)
            {
                return(HttpNotFound());
            }

            ViewBag.CompanyId = new SelectList(db.Companies, "Id", "Name", flights.CompanyId);
            ViewBag.StatusId  = new SelectList(db.Statuses, "StatusId", "Name", flights.StatusId);
            return(View(flights));
        }