Https://thwarts.cee.illinois.edu/files/2025/06/travelusa-11-ways-to-contact-to-live-agent-at-united-airlines-via-email-chat-or-phone-etc-quick-guide.pdf https://thwarts.cee.illinois.edu/files/2025/06/travelusa-11-ways-to-contact-to-live-agent-at-united-airlines-via-email-chat-or-phone-etc-quick-guide.pdf