user_turns: <SILENCE> north gastropub <SILENCE> chinese <SILENCE> 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 kind of food would you like? api_call gastropub north R_price Sorry there is no gastropub restaurant in the north of town api_call chinese north R_price hakka is a nice restaurant in the north of town serving chinese food The phone number of hakka is hakka_phone  you are welcome