user_turns: <SILENCE> im looking for an expensive restaurant i dont care east part of town <SILENCE> is there anything else what is the address and phone number 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 . What type of food do you want? There are restaurants serving any kind of food in the expensive price range . What area 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 yu_garden is a nice place in the east of town and the prices are expensive The phone number of yu_garden is yu_garden_phone  you are welcome