user_turns: <SILENCE> i want to find a cheap restaurant and it should serve portuguese food yes any <SILENCE> whats the phone number 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 portuguese restaurant right? There are restaurants serving portuguese in the cheap price range . What area would you like? api_call portuguese R_location cheap nandos_city_centre serves portuguese food in the cheap price range The phone number of nandos_city_centre is nandos_city_centre_phone  you are welcome