user_turns: <SILENCE> <SILENCE> cheap restaurant any west west yes <SILENCE> address phone number 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? There are restaurants in the cheap price range . What type of food do you want? You are looking for a restaurant serving any kind of food right? What part of town do you have in mind? Did you say you are looking for a restaurant in the west of town? api_call R_cuisine west cheap la_margherita is a nice place in the west of town and the prices are cheap Sure , la_margherita is on la_margherita_address The phone number of la_margherita is la_margherita_phone  you are welcome