user_turns: <SILENCE> persian food portugeuse food <SILENCE> price range phone number phone number 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 ? I am sorry but there is no persian restaurant that matches your request api_call persian R_location R_price nandos_city_centre serves portuguese food . nandos_city_centre is in the cheap price range nandos_city_centre serves portuguese food . The phone number of nandos_city_centre is nandos_city_centre_phone Sure , nandos_city_centre is on nandos_city_centre_address  you are welcome