user_turns: <SILENCE> expensive restaurant breath dont care east <SILENCE> address post code breath thank you goodbye
system_turns: Hello , welcome to the Cambridge restaurant system . You can ask for restaurants by area , price range or food type . How may I help you ? There are restaurants in the expensive price range . What type of food do you want? There are restaurants serving any kind of food in the expensive price range . What area would you like? api_call R_cuisine east expensive grafton_hotel_restaurant is a nice place in the east of town and the prices are expensive grafton_hotel_restaurant is a great restaurant The post code of grafton_hotel_restaurant is grafton_hotel_restaurant_post_code  you are welcome