Banlue , S. ., & Inthasaeng , khanittha . (2023). The Development of Chatbot System for Customer Relationship Management The Ubon Ratchathani Provincial Office of The Comptroller General. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University, 18(2), 123–134. retrieved from https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/263001