generate response: Could you book a table at the Backstreet Bistro on Friday? 18:45 for 4 people, please.. Intent: book_restaurant. Slots: restaurant-area=centre, restaurant-bookday=friday, restaurant-bookpeople=4, restaurant-booktime=18:45, restaurant-food=gastropub, restaurant-name=backstreet bistro, restaurant-pricerange=expensive
Response: I'm sorry, Backstreet Bistro does not have availability at this time. Would you like to book another day or time for your reservation?