generate response: Arrival time isn't the issue, but I have morning meeting so I can't leave bishops stortford until after 12:15 .. Intent: find_train. Slots: train-day=thursday, train-departure=bishops stortford, train-destination=cambridge, train-leaveat=12:15
Response: There is a train leaving at 13:29 and arriving at 14:07. Would you like me to book that for you?