generate response: I got ahead of myself, sorry. I don't need the train tickets just yet, but can you tell me the travel time for TR7706?. Intent: find_train. Slots: train-arriveby=dontcare, train-day=wednesday, train-departure=cambridge, train-destination=peterborough, train-leaveat=15:45
Response: Yes, train TR7706 has a duration of 50 minutes.