user_turns: <SILENCE> i need a cheap restaurant in the west part of town <SILENCE> can i have the phone number and the address 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 The phone number of la_margherita is la_margherita_phone Sure , la_margherita is on la_margherita_address  you are welcome