user_turns: <SILENCE> i want to find an expensive restaurant in the east part of town i dont care <SILENCE> what is the address thank you goodbye
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 expensive price range and the east of town . What type 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