generate response: Departure time doesn't matter, I just need to arrive at the stansted airport by 21:30 on Thursday, and I need to depart from Cambridge.. Intent: find_train. Slots: train-arriveby=21:30, train-day=thursday, train-departure=cambridge, train-destination=stansted airport, train-leaveat=dontcare
Response: I have 16 train departures fitting your preferences. They leave every :40 of the hour starting at 5:40 to 20:40, would you like me to book one of these?