generate response: I would like to depart from Cambridge on Wednesday and arrive in King's Lynn by 09:30.. Intent: find_train. Slots: train-arriveby=09:30, train-day=wednesday, train-departure=cambridge, train-destination=kings lynn
Response: There are 4 trains that meet your criteria, departing at 05:11, 06:11, 07:11, or 08:11. Which one would you like me to book?