user_turns: <SILENCE> bye west moderate <SILENCE> phone number 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? Would you like something in the cheap , moderate , or expensive price range? api_call R_cuisine west moderate prezzo is a nice restaurant in the west of town in the moderate price range The phone number of prezzo is prezzo_phone  you are welcome