user_turns: <SILENCE> looking for an expensive restaurant in the south part of town <SILENCE> <SILENCE> <SILENCE> south part what is the phone number <SILENCE> <SILENCE> <SILENCE> <SILENCE> 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 part of town do you have in mind? api_call R_cuisine R_location expensive darrys_cookhouse_and_wine_shop is in the expensive price range darrys_cookhouse_and_wine_shop is a great restaurant The post code of darrys_cookhouse_and_wine_shop is darrys_cookhouse_and_wine_shop_post_code The phone number of darrys_cookhouse_and_wine_shop is darrys_cookhouse_and_wine_shop_phone darrys_cookhouse_and_wine_shop is a great restaurant backstreet_bistro is in the expensive price range backstreet_bistro is a great restaurant pipasha_restaurant is in the expensive price range  you are welcome