public async Task <ActionResult <Passenger> > DeletePassengerAsync(int id)
        {
            var passenger = await _repository.GetByIdAsync(id);

            if (passenger == null)
            {
                return(NotFound());
            }

            _repository.Delete(passenger);

            await _repository.SaveChangesAsync();

            return(Ok(_mapper.Map <PassengerReadDto>(passenger)));
        }