generate response: The train should arrive by 19:30 and should go to kings lynn. The train should depart from cambridge and should leave on saturday. Intent: find_train. Slots: train-arriveby=19:30, train-day=saturday, train-departure=cambridge, train-destination=kings lynn, train-leaveat=19:30
Response: There are 14 trains that fit your criteria. The first departs at 5:11 and the last train train departs at 18:11. What would be your preference for departure time?