user_turns: <SILENCE> <SILENCE> <SILENCE> yes yes <SILENCE> 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 ? What kind of food would you like? You are looking for a restaurant serving any kind of food right? Let me confirm , You are looking for a restaurant in the moderate price range right? api_call R_cuisine north moderate golden_wok is a nice place in the north of town and the prices are moderate  you are welcome