user_turns: <SILENCE> expensive restaurant catalan any <SILENCE> address address phone number area 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? What part of town do you have in mind? api_call R_cuisine R_location expensive ugly_duckling is a nice restaurant in the centre of town in the expensive price range The price range at ugly_duckling is expensive . Sure , ugly_duckling is on ugly_duckling_address The phone number of ugly_duckling is ugly_duckling_phone The price range at ugly_duckling is expensive .  you are welcome