https://support.google.com/calendar/thread/337969094?hl=en&sjid=13566236968514811898-NA

https://forums.serebii.net/threads/4-ways-to-contact-lufthansa-airline-customer-service-using-phone-email-and-chat-options-a-simple-guide.782370/

https://flyieshub.zohodesk.com/portal/en/kb/articles/how-to-contact-frontier-airlines-customer-service-phone-chat-support-explained

https://support.google.com/edu/classroom/thread/337969045?hl=en&sjid=4266165195400771554-NC

https://www.anime-planet.com/users/sheikh122/lists/atencion-al-cliente-como-hablar-con-un-a-1315757

American Airlines Name Change Policy Explained

https://support.google.com/nonprofits/thread/337968349?hl=en&sjid=11662366150426146353-NC

https://forums.serebii.net/threads/lufthansa-airline-customer-service-through-whatsapp-how-to-access-24-7-travel-assistance.782369/

https://support.google.com/edu/classroom/thread/337968559?hl=en&sjid=4266165195400771554-NC

Steps to Change Name on American Ticket