To change a name on a United Airlines ticket, visit the Manage Reservations page, log in, and select your booking. Request a name correction by following prompts or contacting customer service. Ensure supporting documents, like a passport, match the updated name. Fees may apply.

https://forum.netgate.com/topic/193124/ual-ota-step-by-step-guide-for-name-change-on-united-flight-ticket-ota