user_turns: <SILENCE> cheap restaurant west part of town any <SILENCE> anything else 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 kind of food would you like? api_call R_cuisine west cheap la_margherita is a nice place in the west of town and the prices are cheap thanh_binh is a nice place in the west of town and the prices are cheap  you are welcome