generate response: I'll be leaving from kings lynn on Monday.. Intent: find_train. Slots: restaurant-area=centre, restaurant-bookday=monday, restaurant-bookpeople=2, restaurant-booktime=19:00, restaurant-food=chinese, restaurant-name=rice house, restaurant-pricerange=cheap, train-day=monday, train-departure=kings lynn, train-destination=cambridge
Response: What are you preferred arrival and departure times?