generate response: What about the train ID?. Intent: find_train. Slots: train-arriveby=dontcare, train-day=wednesday, train-departure=cambridge, train-destination=stevenage, train-leaveat=20:45
Response: The train ID for the departure at 21:21 is TR9016 and the trainID that departs at 2312 is TR6387. Would you like me to book on of these for you?