user_turns: <SILENCE> doesnt matter doesnt matter yes yes find me vietnamese food <SILENCE> what is the address what is the address what is the phone number what area what kind of food does it serve 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 ? What part of town do you have in mind? Ok , a restaurant in any part of town is that right? Let me confirm , You are looking for a restaurant in the cheap price range right? the river bar steakhouse and grill is in the cheap price range api_call vietnamese R_location cheap thanh_binh serves vietnamese food in the cheap price range thanh_binh is a great restaurant Sure , thanh_binh is on thanh_binh_address The phone number of thanh_binh is thanh_binh_phone thanh_binh is a nice place in the west of town thanh_binh serves vietnamese food  you are welcome