user_turns: <SILENCE> italian food moderate north <SILENCE> 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 ? Would you like something in the cheap , moderate , or expensive price range? What part of town do you have in mind? api_call italian north moderate Sorry there is no moderate restaurant in the north of town serving italian food  you are welcome