user_turns: <SILENCE> i need a restaurant that serves corsica food how about vietnamese type of food no how about vietnamese <SILENCE> whats the address whats 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 ? I'm sorry but there is no restaurant serving corsica food You are looking for a corsica restaurant right? api_call vietnamese R_location R_price thanh_binh serves vietnamese food Sure , thanh_binh is on thanh_binh_address The phone number of thanh_binh is thanh_binh_phone  you are welcome