user_turns: <SILENCE> afghan food korean food <SILENCE> address price range price range 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 ? I am sorry but there is no afghan restaurant that matches your request api_call korean R_location R_price little_seoul serves korean food . Sure , little_seoul is on little_seoul_address little_seoul is in the expensive price range  you are welcome