user_turns: <SILENCE> portuguese food cheap restaurant portuguese <SILENCE> address phone number area 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 ? You are looking for a restaurant is that right? api_call portuguese R_location cheap nandos_city_centre is a great restaurant serving portuguese food and it is in the cheap price range Sure , nandos_city_centre is on nandos_city_centre_address The phone number of nandos_city_centre is nandos_city_centre_phone nandos_city_centre is a nice place in the centre of town  you are welcome