generate response: I need to be in Cambridge by 10:15 on Friday.. Intent: find_train. Slots: restaurant-area=south, restaurant-bookday=friday, restaurant-bookpeople=2, restaurant-booktime=16:30, restaurant-food=pizza, restaurant-name=pizza hut cherry hilton, pizza hut, restaurant-pricerange=moderate, train-arriveby=10:15, train-day=friday, train-destination=cambridge
Response: Where are you leaving from and on what day?