user_turns: <SILENCE> what about portuguese food what about portuguese food <SILENCE> is it serving portuguese food <SILENCE> what is the phone number what is the 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 malaysian food api_call malaysian south R_price restaurant_alimentum is a nice place in the south of town api_call portuguese R_location R_price nandos is a nice place in the south of town serving tasty portuguese food The phone number of nandos is nandos_phone Sure , nandos is on nandos_address  you are welcome