generate response: Yes, I'd like to book for 2 people at 16:45 on tuesday.. Intent: book_restaurant. Slots: restaurant-area=centre, restaurant-bookday=tuesday, restaurant-bookpeople=2, restaurant-booktime=16:45, restaurant-food=thai, restaurant-pricerange=expensive
Response: I'm sorry, but they seem to be all booked up at that time. Would you like to try a different day or time?