generate response: Yes, please book a party of 4 at 11:30 Tuesday. Please include a reference number.. Intent: find_train. Slots: restaurant-area=centre, restaurant-bookday=tuesday, restaurant-bookpeople=4, restaurant-booktime=11:30, restaurant-food=north american, restaurant-name=gourmet burger kitchen, restaurant-pricerange=expensive
Response: I've went ahead and booked that. The reference number is PDIWVU9D .