public IActionResult UpdatePassenger(ChangeSeatsPassengersDTO passengerDTO) { if (passengerDTO == null) { return(BadRequest()); } Passenger passenger1 = _passengerRepository.GetPassengerById(passengerDTO.UserId1); Passenger passenger2 = _passengerRepository.GetPassengerById(passengerDTO.UserId2); _passengerRepository.ChangeSeats(passenger1, passenger2); _passengerRepository.SaveChanges(); return(NoContent()); }