public String Get(string origin, string destin)
        {
            try
            {
                _airportService.CheckAirports(origin, destin);

                var result = _routeService.GetShortest(origin, destin);

                return(result);
            }
            catch (ValidationException e)
            {
                return(e.Message);
            }
            catch (Exception)
            {
                throw new HttpResponseException(HttpStatusCode.BadRequest);
            }
        }