user_turns: <SILENCE> cheap restaurant european food how about cheap price range cheap price range 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 ? There are restaurants in the cheap price range . What type of food do you want? I'm sorry but there is no restaurant serving cheap european food Could you please repeat that? I'm sorry but there is no restaurant serving cheap european food  you are welcome