user_turns: <SILENCE> expensive restaurant in the south part of town any address type of food 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? the good luck chinese food takeaway is a nice restaurant in the south of town serving chinese food Sure , the good luck chinese food takeaway is on the_good_luck_chinese_food_takeaway_address the good luck chinese food takeaway is a nice restaurant in the south of town in the expensive price range  you are welcome