generate response: I don't need to purchase tickets today, but can you tell me the train ID and the total travel time to get me there?. Intent: find_train. Slots: train-arriveby=12:45, train-day=monday, train-departure=stevenage, train-destination=cambridge, train-leaveat=dontcare
Response: TR9062 will take 49 minutes, from 11:54 to 12:43. Do you need anything else?