generate response: Ok, I want to book a table for 5 people at 16:30 on wednesday.. Intent: find_train. Slots: restaurant-area=centre, restaurant-bookday=wednesday, restaurant-bookpeople=5, restaurant-booktime=16:30, restaurant-food=chinese, restaurant-pricerange=expensive
Response: I'm sorry, but I attempted reservations at your specified time at all 4 restaurants, and none have availability at that time. Would you like to try a different time?