def main():
Aircraft.load_aircrafts()
route = ['DUB','LHR','SYD','JFK','AAL']
valid_aircraft = 'A330'
test_itin = Itinerary(route,valid_aircraft)
print(test_itin)
invalid_aircaft = '£££'
test_itin2 = Itinerary(route,invalid_aircaft)
print(test_itin2)
