user_turns: <SILENCE> <SILENCE> food <SILENCE> <SILENCE> im looking for im looking for a restaurant that serves no no no im looking for a swiss food yes how about how about vietnamese how about vietnamese food <SILENCE> whats the what is the address thank you goodbye
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? You are looking for a portuguese restaurant right? What part of town do you have in mind? I'm sorry but there is no portuguese restaurant in the west of town Could you please repeat that? You are looking for a portuguese restaurant right? Did you say you are looking for a restaurant in the west of town? I'm sorry but there is no portuguese restaurant in the west of town You are looking for a swiss restaurant right? I'm sorry but there is no restaurant serving swiss food Could you please repeat that? I'm sorry but there is no restaurant serving swiss food Could you please repeat that? api_call vietnamese R_location R_price thanh_binh serves vietnamese food Can I help you with anything else? Sure , thanh_binh is on thanh_binh_address  you are welcome