The Public Service Commission of Canada (PSC) modernized its travel-approval process by building a secure, in-house AI agent using Microsoft 365 Copilot Chat and Copilot Studio, which draws on SharePoint policies, SOPs, and travel docs to answer questions instantly and accurately, 24/7, without consultants. The Copilot agent cut travel-mailbox emails by 90% and reduced complex query times from 5 days to 30 seconds via bilingual self-service. Earlier bookings now save thousands per trip, plus approximately $120,000 CAD a year in salary cost avoidance.