user_turns: <SILENCE> im looking for air tran food in the south part of town <SILENCE> what about portuguese <SILENCE> portuguese food whats the phone number whats the address 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 R_cuisine south R_price Sorry there is no eritrean restaurant in the south of town api_call portuguese south R_price taj_tandoori is a nice restaurant in the south of town serving indian food nandos is a nice restaurant in the south of town serving portuguese food The phone number of nandos is nandos_phone Sure , nandos is on nandos_address  you are welcome