user_turns: <SILENCE> im looking for a cheap restaurant any right west <SILENCE> whats phone number whats the address 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 ? There are restaurants in the cheap price range . What type of food do you want? You are looking for a restaurant serving any kind of food right? What part of town do you have in mind? api_call R_cuisine west cheap thanh_binh is a nice place in the west of town and the prices are cheap The phone number of thanh_binh is thanh_binh_phone Sure , thanh_binh is on thanh_binh_address  you are welcome