user_turns: <SILENCE> cheap restaurant serving malaysian food vietnamese food vietnamese food <SILENCE> phone number what is 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 malaysian food Could you please repeat that? api_call vietnamese R_location cheap thanh_binh serves vietnamese food Can I help you with anything else? The phone number of thanh_binh is thanh_binh_phone  you are welcome