generate response: Yes, I'd like to depart any time after 21:45. Do any trains fit that time frame? If so, could I have the train ID, travel time, and when it will arrive?. Intent: find_train. Slots: train-day=monday, train-departure=ely, train-destination=cambridge, train-leaveat=21:45
Response: There is one train leaving after 21:45 on monday. It is TR4724, leaving at 23:52 for a duration of 17 minutes, arriving at 23:52.