user_turns: <SILENCE> im looking for portuguese food i dont care <SILENCE> address thank you goodbye
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 ? What part of town do you have in mind? api_call portuguese R_location R_price nandos_city_centre serves portuguese food Sure , nandos_city_centre is on nandos_city_centre_address  you are welcome