user_turns: <SILENCE> russian food french food north <SILENCE> phone number phone number 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 There are restaurants serving french food . What area do you want? api_call french north R_price restaurant_two_two is a nice place in the north of town serving tasty french food Can I help you with anything else? The phone number of restaurant_two_two is restaurant_two_two_phone  you are welcome