generate response: I have a business meeting in Ely. I definitely need to be on time, so I need a train that will arrive by 19:45.. Intent: find_train. Slots: train-arriveby=19:45, train-day=saturday, train-departure=cambridge, train-destination=ely
Response: TR1469 has the latest arrival time of 18:07. Would you like for me to book it?