user_turns: <SILENCE> i am looking fora restaurant that should serve north town no north part of town world food chinese food <SILENCE> whats 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 ? What part of town do you have in mind? Sorry would you like something in the west or in the south What kind of food would you like? I'm sorry but there is no restaurant serving world food api_call chinese north R_price golden_wok is a nice place in the north of town serving tasty chinese food The phone number of golden_wok is golden_wok_phone  you are welcome