generate response: I will be departing from Cambridge to Leicester. The arrival time does not matter as long as it leaves after 18:00.. Intent: find_train. Slots: train-arriveby=dontcare, train-day=sunday, train-departure=cambridge, train-destination=leicester, train-leaveat=18:00, 18.00
Response: The first train leaving cabridge for leicester on Sunday is TR9517. It leaves at 18:21. Would you like me to book a seat on that train?