user_turns: <SILENCE> im looking for a restaurant in the center serving air tran cheap <SILENCE> can i have the address phone number and 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 ? What kind of food would you like? Would you like something in the cheap , moderate , or expensive price range? api_call R_cuisine R_location cheap rice_house is a nice place in the centre of town and the prices are cheap rice_house is on rice_house_address  you are welcome