user_turns: <SILENCE> find a cheap restaurant doesnt matter unusual food unusual food european food cheap 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? Ok , a restaurant in any part of town is that right? What kind of food would you like? I'm sorry but there is no restaurant serving unusual food Would you like something in the cheap , moderate , or expensive price range? I'm sorry but there is no restaurant serving cheap european food  you are welcome