user_turns: <SILENCE> an expensive restaurant serving cantonese food thai food thai food food any <SILENCE> may i have the address and 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 cantonese food Could you please repeat that? There are restaurants serving thai in the expensive price range . What area would you like? What part of town do you have in mind? api_call thai R_location expensive bangkok_city serves thai food in the expensive price range The phone number of bangkok_city is bangkok_city_phone  you are welcome