generate response: That works for me. Book it for 3 people at 21:00 on the same day.. Intent: book_restaurant. Slots: restaurant-area=centre, restaurant-bookday=saturday, restaurant-bookpeople=3, restaurant-booktime=21:00, restaurant-name=cotto, restaurant-pricerange=moderate
Response: Unfortunately, there is no availability for that time. Did you have a different time in mind?