generate response: I want it for monday and to leave after 19:15. Intent: find_train. Slots: hotel-bookday=monday, hotel-bookpeople=3, hotel-bookstay=5, hotel-name=alexander bed and breakfast, hotel-parking=yes, hotel-pricerange=cheap, hotel-stars=4, train-day=monday, train-departure=stevenage, train-destination=cambridge, train-leaveat=19:15
Response: There is a train on Monday at 19:54.