user_turns: <SILENCE> <SILENCE> persian restaurant in the north part of town chinese food chinese food yes any <SILENCE> <SILENCE> phone number 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? I'm sorry but there is no restaurant serving persian food Could you please repeat that? Did you say you are looking for a restaurant in the north of town? There are restaurants serving chinese in the north of town . What price range would you like? api_call chinese north R_price the_hotpot is a nice place in the north of town serving tasty chinese food golden_wok is a nice place in the north of town serving tasty chinese food golden_wok is a great restaurant The phone number of golden_wok is golden_wok_phone  you are welcome