user_turns: <SILENCE> i need an expensive restaurant in the east part of town i dont care <SILENCE> phone number whats the phone number 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 ? 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 yu_garden is a nice place in the east of town and the prices are expensive yu_garden is a great restaurant The phone number of yu_garden is yu_garden_phone Sure , yu_garden is on yu_garden_address  you are welcome