generate response: No thanks, I actually need a train. I'll be heading to cambridge from peterborough on Sunday. I need to leave after 19:15.. Intent: find_train. Slots: train-day=sunday, train-departure=peterborough, train-destination=cambridge, train-leaveat=19:15
Response: Ok, there are 10 different trains, what time did you want to arrive by so we can narrow it down a bit.