generate response: The train should arrive by 13:00 and should depart from cambridge.. Intent: find_train. Slots: train-arriveby=13:00, train-day=saturday, train-departure=cambridge, train-destination=ely
Response: Your best best is TR0721, leaving Cambridge at 11:50 and arriving Ely at 12:07. The trains only run every 2 hours on Saturdays.