Implementing Retrieval Augmented Generation Technique on Unstructured and Structured Data Sources in a Call Center of a Large Financial Institution. - Syed Shariyar Murtaza; Yifan Nie; Elias Avan; Utkarsh Soni; Wanyu Liao; Adam Carnegie; Cyril John Mathias; Junlin Jiang; Eugene Wen (NAACL (Industry Track), 2025)