generate response: Can you check to see if booking is available for 5 people at 19:30 on Sunday?. Intent: book_restaurant. Slots: restaurant-area=west, restaurant-bookday=sunday, restaurant-bookpeople=5, restaurant-booktime=19:30, restaurant-food=british, restaurant-pricerange=moderate
Response: Sorry, but there is not space for 5 people. Can I search a restaurant in the north?