user_turns: <SILENCE> looking for a restaurant in the west part of town that serves bistro food <SILENCE> how about italian <SILENCE> how about italian food how about italian food may i get the 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 ? api_call bistro west R_price Sorry there is no bistro restaurant in the west of town api_call italian west R_price saint_johns_chop_house is a nice restaurant in the west of town serving british food cocum is a nice restaurant in the west of town serving indian food la_margherita is a nice restaurant in the west of town serving italian food The phone number of la_margherita is la_margherita_phone  you are welcome