user_turns: <SILENCE> expensive restaurant east part of town any <SILENCE> phone number 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 royal_standard is a nice place in the east of town and the prices are expensive The phone number of royal_standard is royal_standard_phone  you are welcome