user_turns: <SILENCE> looking for a restaurant in west part of town serving cantonese yes italian food moderate <SILENCE> phone number what is 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 cantonese restaurant right? I'm sorry but there is no restaurant serving cantonese food Would you like something in the cheap , moderate , or expensive price range? api_call italian west moderate prezzo is a great restaurant serving moderate italian food in the west of town . prezzo is a great restaurant The phone number of prezzo is prezzo_phone  you are welcome