user_turns: <SILENCE> korean food in the north part of town <SILENCE> persian food <SILENCE> chinese food <SILENCE> may i have 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 ? api_call korean north R_price Sorry there is no korean restaurant in the north of town api_call persian north R_price Sorry there is no persian restaurant in the north of town api_call chinese north R_price the_hotpot is a nice restaurant in the north of town serving chinese food The phone number of the_hotpot is the_hotpot_phone  you are welcome