user_turns: <SILENCE> <SILENCE> cantonese thai no thai food any area expensive <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? I'm sorry but there is no restaurant serving cantonese food You are looking for a cantonese restaurant right? I'm sorry but there is no restaurant serving cantonese food There are restaurants serving thai food . What area do you want? There are restaurants serving thai food in any part of town . What price range would you like? api_call thai R_location expensive bangkok_city serves thai food in the expensive price range Sure , bangkok_city is on bangkok_city_address The phone number of bangkok_city is bangkok_city_phone  you are welcome