user_turns: <SILENCE> danish food vietnamese food <SILENCE> address 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 english food api_call vietnamese R_location R_price thanh_binh serves vietnamese food Sure , thanh_binh is on thanh_binh_address  you are welcome