public IActionResult Get(int flightid)
 {
     try
     {
         var flight = _repository.GetFlightById(flightid);
         if (flight != null)
         {
             var link = new LinkHelper <Flights>(flight);
             link.Links.Add(new Link
             {
                 Href   = Url.Link("Schedule", new { flight.FlightId }),
                 Rel    = "GET-schedule",
                 method = "GET"
             });
             return(Ok(link));
         }
         else
         {
             return(NotFound("No flight available"));
         }
     }
     catch (Exception ex)
     {
         return(BadRequest(ExceptionHelper.ProcessError(ex)));
     }
 }