user_turns: <SILENCE> whats a cheap restaurant in the west cheap yes <SILENCE> whats the address phone number and post code post code 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? api_call R_cuisine west cheap la_margherita is a nice place in the west of town and the prices are cheap The phone number of la_margherita is la_margherita_phone The post code of la_margherita is la_margherita_post_code  you are welcome