generate response: I need to get your London Kings Cross on Saturday.. Intent: find_train. Slots: train-arriveby=13:00, train-day=saturday, train-departure=cambridge, train-destination=london kings cross
Response: There are four trains that meet those criteria. They leave at 5, 7, 9, and 11 and arrive 51 minutes after departure. Would you like me to book one for you?