Today we cover United's AI chatbot being tricked into authorizing a fake refund after someone claimed CEO Scott Kirby promised it, highlighting the unreliability of automated customer service. We also discuss Trivago's controversial new tip requests for hotel bookings, airline miles expiration policies across different programs, and American Airlines flying empty A321neo aircraft across the Atlantic for operational reasons. Plus, we review credit card updates including the Citi Strata Elite's authorized user costs and Delta's quirky Seahawks fan rewards program.