generate response: Perfect, can you book it for 5 people on the same day at 16:30?. Intent: book_restaurant. Slots: restaurant-area=centre, restaurant-bookday=friday, restaurant-bookpeople=5, restaurant-booktime=16:30, restaurant-name=fitzbillies restaurant, restaurant-pricerange=expensive
Response: Sorry, but they're all full at that time. Would you like to try a different time or perhaps another day?