user_turns: <SILENCE> sea food <SILENCE> cheap <SILENCE> portuguese <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 ? api_call R_cuisine R_location R_price loch_fyne serves seafood food . api_call R_cuisine R_location cheap Sorry there is no seafood restaurant in the cheap price range api_call portuguese R_location cheap nandos is a great restaurant serving portuguese food and it is in the cheap price range Sure , nandos is on nandos_address  you are welcome