public IActionResult CreateNewAirport(string name, string city, bool IsInternational, string airline)
{
var airport = new Airport(name, city, IsInternational);
var airlines = _airlineService.Deserialize <List <Airline> >();
var newAirline = airlines.FirstOrDefault(x => x.AirlineName == airline);
airport.Airlines.Add(newAirline);
_airportService.AddAirport(airport);
var airports = _airportService.GetAirports();
return(View("GetAllAirports", airports));
}