user_turns: <SILENCE> i would like to find a cheap restaurant the west part of town <SILENCE> can i get the address can i have the 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 part of town do you have in mind? 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  you are welcome