user_turns: <SILENCE> expensive restaurant cantonese food no no yes no no yes can <SILENCE> cantonese food north_american food north_american food expensive north_american north_american north_american restaurant expensive 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? I'm sorry but there is no restaurant serving cantonese food Did you say you are looking for a restaurant in the north of town? You are looking for a north_american restaurant right? I'm sorry but there is no north_american restaurant in the north of town Did you say you are looking for a restaurant in the north of town? Let me confirm , You are looking for a restaurant in the expensive price range right? I'm sorry but there is no north_american restaurant in the north of town api_call R_cuisine R_location expensive hakka is a nice place in the north of town and the prices are expensive I'm sorry but there is no restaurant serving cantonese food I'm sorry but there is no north_american restaurant in the north of town Let me confirm , You are looking for a restaurant in the expensive price range right? I'm sorry but there is no north_american restaurant in the north of town Let me confirm , You are looking for a restaurant in the expensive price range right? I'm sorry but there is no north_american restaurant in the north of town  you are welcome