user_turns: <SILENCE> spanish food cheap <SILENCE> phone number spanish food thank you goodbye
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 ? Would you like something in the cheap , moderate , or expensive price range? api_call spanish R_location cheap pizza_express is a great restaurant The phone number of pizza_express is pizza_express_phone pizza_express is a great restaurant  you are welcome