generate response: I don't need to book it yet. What's the departure and travel times for the train?. Intent: find_train. Slots: train-arriveby=13:00, train-day=sunday, train-departure=cambridge, train-destination=london liverpool street
Response: TR7187 departs from Cambridge at 23:59 and arrives in London Liverpool Street at 01:27. Do you want me to book that for you or move on to restaurant assistance?