user_turns: <SILENCE> im looking for a cheap vietnamese restaurant <SILENCE> <SILENCE> im looking for a vietnamese restaurant whats its phone number <SILENCE> im looking for a cheap restaurant whats its address may i have its 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 vietnamese R_location cheap thanh_binh is a great restaurant serving vietnamese food and it is in the cheap price range Can I help you with anything else? thanh_binh is a great restaurant serving vietnamese food and it is in the cheap price range The phone number of thanh_binh is thanh_binh_phone Can I help you with anything else? thanh_binh is a great restaurant serving vietnamese food and it is in the cheap price range Sure , thanh_binh is on thanh_binh_address The phone number of thanh_binh is thanh_binh_phone  you are welcome