user_turns: <SILENCE> find me an expensive persian restaurant <SILENCE> how about british food <SILENCE> i need an expensive british restaurant any part of town give me the phone number thank you good bye
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 ? api_call persian R_location expensive Sorry there is no persian restaurant in the expensive price range api_call british R_location expensive gourmet_burger_kitchen is a great restaurant serving north_american food and it is in the expensive price range What part of town do you have in mind? midsummer_house_restaurant is a nice restaurant in the centre of town serving british food The phone number of midsummer_house_restaurant is midsummer_house_restaurant_phone  you are welcome