generate response: Of course. I'd like to leave from Cambridge and head to London King's Cross.. Intent: find_train. Slots: train-day=tuesday, train-departure=cambridge, train-destination=london kings cross, train-leaveat=20:00
Response: TR5941 leaves at 21:00 and arrives at 21:51. TR6595 leaves at 23:00 and arrives by 23:51. Which do you prefer?