generate response: What is the departure time for the train that arrives at 7:35, and how much do the tickets cost for that one?. Intent: find_train. Slots: train-arriveby=08:30, 8:30, train-day=friday, train-departure=norwich, train-destination=cambridge
Response: That train leaves at 6:16 and costs 17.60 pounds. Would you like me to book it?