generate response: Departing from Stevenage, going to Cambridge. Friday, want to leave after 12:45. I want the train ID, price, and travel time, please.. Intent: find_train. Slots: train-day=friday, train-departure=stevenage, train-destination=cambridge, train-leaveat=12:45
Response: TR7785 leaves at 13:54, 49 minute travel time, for 12.80 pounds. Would you like to book it?