user_turns: <SILENCE> i need a cheap restaurant in the west part of town okay back yes no back 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 kind of food would you like? I'm sorry but there is no restaurant serving english food Did you say you are looking for a restaurant in the west of town? You are looking for a english restaurant right? Let me confirm , You are looking for a restaurant in the cheap price range right? I'm sorry but there is no restaurant serving english food  you are welcome