generate response: The train should leave after 17:15 and should go to Cambridge.. Intent: find_train. Slots: train-day=friday, train-departure=london liverpool street, train-destination=cambridge, train-leaveat=17:15
Response: There are 4 trains that leave after 17:15. The TR9886 leaves at 17:39 from london liverpool street. Would you like me to book you a seat?