user_turns: <SILENCE> yes yes no <SILENCE> christmas food chinese food chinese food food address address price range 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 christmas restaurant right? You are looking for a vietnamese restaurant right? api_call christmas south R_price thanh_binh serves vietnamese food I'm sorry but there is no restaurant serving christmas food Can I help you with anything else? thanh_binh is a great restaurant peking_restaurant is a nice place in the south of town serving tasty chinese food peking_restaurant is a great restaurant Sure , peking_restaurant is on peking_restaurant_address peking_restaurant is in the expensive price range  you are welcome