user_turns: <SILENCE> restaurant in west part of town <SILENCE> no wrong no vietnamese food vietnamese food vietnamese food 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 ? There are restaurants in the west of town . What type of food do you want? You are looking for a restaurant serving any kind of food right? Would you like something in the cheap , moderate , or expensive price range? You are looking for a restaurant serving any kind of food right? Would you like something in the cheap , moderate , or expensive price range? I'm sorry but there is no restaurant serving cantonese food Could you please repeat that? I'm sorry but there is no restaurant serving cantonese food  you are welcome