user_turns: <SILENCE> <SILENCE> west <SILENCE> thai food address thai yes 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? What kind of food would you like? I'm sorry but there is no chinese restaurant in the west of town Did you say you are looking for a restaurant in the west of town? I'm sorry but there is no chinese restaurant in the west of town Did you say you are looking for a restaurant in the west of town? I'm sorry but there is no chinese restaurant in the west of town  you are welcome