user_turns: <SILENCE> i want a russian restaurant how about a korean restaurant korean <SILENCE> whats the address whats the 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'm sorry but there is no restaurant serving russian food Sorry would you like russian or korean food? 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