user_turns: <SILENCE> cheap restaurant west part of town <SILENCE> address phone number type of food what type of 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 ? api_call R_cuisine west cheap la_margherita is a nice restaurant in the west of town in the cheap price range Sure , la_margherita is on la_margherita_address The phone number of la_margherita is la_margherita_phone thanh_binh is a nice restaurant in the west of town in the cheap price range thanh_binh serves vietnamese food  you are welcome