user_turns: <SILENCE> romanian food vietnamese food no vietnamese vietnamese vietnamese vietnamese <SILENCE> vietnamese 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 romanian food You are looking for a romanian restaurant right? I'm sorry but there is no restaurant serving romanian food Could you please repeat that? I'm sorry but there is no restaurant serving romanian food Could you please repeat that? api_call vietnamese R_location R_price thanh_binh serves vietnamese food I am sorry but there is no other vietnamese restaurant that matches your request Can I help you with anything else?  you are welcome