user_turns: <SILENCE> cantonese food north cantonese food yes asian_oriental north part of town <SILENCE> address 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 ? What kind of food would you like? You are looking for a cantonese restaurant right? I'm sorry but there is no restaurant serving cantonese food There are restaurants serving asian_oriental food . What area do you want? api_call asian_oriental north R_price saigon_city is a nice place in the north of town serving tasty asian_oriental food Sure , saigon_city is on saigon_city_address The phone number of saigon_city is saigon_city_phone  you are welcome