generate response: No, I need a train that departs from stansted airport and it should leave after 11:30.. Intent: find_train. Slots: train-day=thursday, train-departure=stansted airport, train-destination=cambridge, train-leaveat=11:30
Response: The first train to Cambridge from the airport after 11:30 is TR9775, leaving at 12:24 and arriving in Cambridge at 12:52. Will that work?