user_turns: <SILENCE> im looking for an expensive restaurant and it should be east part of town any <SILENCE> whats the address 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? api_call R_cuisine east expensive grafton_hotel_restaurant is a nice place in the east of town and the prices are expensive Sure , grafton_hotel_restaurant is on grafton_hotel_restaurant_address  you are welcome