input: Write a python function to create a Flight object and return its details as a dictionary.
  assert create_flight("Delta", "New York", "Los Angeles", 20, "4:00PM", "10:00PM", "DL123") == {'airline': 'Delta', 'origin': 'New York', 'destination': 'Los Angeles', 'num_passengers': 20, 'departure_time': '4:00PM', 'arrival_time': '10:00PM', 'flight_number': 'DL123'}
  assert create_flight("United", "Chicago", "Miami", 15, "2:00PM", "6:00PM", "UA456") == {'airline': 'United', 'origin': 'Chicago', 'destination': 'Miami', 'num_passengers': 15, 'departure_time': '2:00PM', 'arrival_time': '6:00PM', 'flight_number': 'UA456'}
  assert create_flight("American Airlines", "Dallas", "San Francisco", 30, "1:00PM", "3:00PM", "AA789") == {'airline': 'American Airlines', 'origin': 'Dallas', 'destination': 'San Francisco', 'num_passengers': 30, 'departure_time': '1:00PM', 'arrival_time': '3:00PM', 'flight_number': 'AA789'}
output: def create_flight(airline, origin, destination, num_passengers, departure_time, arrival_time, flight_number):
      flight_details = {
          'airline': airline,
          'origin': origin,
          'destination': destination,
          'num_passengers': num_passengers,
          'departure_time': departure_time,
          'arrival_time': arrival_time,
          'flight_number': flight_number
      }
      return flight_details