public async Task <ActionResult <List <Flight> > > GetFlightsByOriginCountry(int country_id)
{
FlightsCenterSystem.GetInstance().login(GetLoginToken().Name, GetLoginToken().Password,
out LoginToken <Object> l, out FacadeBase f);
facade = f as LoggedInAirlineFacade;
var result = await Task.Run(() => facade.GetFlightsByOriginCountry(country_id));
return(StatusCode(200, result));
}