user_turns: <SILENCE> cheap restaurant <SILENCE> west part of town dont care <SILENCE> 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 ? api_call R_cuisine R_location cheap kohinoor is in the cheap price range What kind of food would you like? api_call R_cuisine west cheap thanh_binh is a nice place in the west of town and the prices are cheap Sure , thanh_binh is on thanh_binh_address  you are welcome