https://intercom.help/infanthelp/en/articles/11637028-united-airlines-support-for-adding-an-infant-after-booking-hide-guide

https://www.orangetractortalks.com/forums/threads/ten-ways-to-contact-how-to-speak-to-an-agent-at-southwest-through-contact-options-a-complete-step-by-step-guide.75412/

https://intercom.help/infanthelp/en/articles/11637026-adding-an-infant-to-your-united-airlines-booking-help-guide-full-process

https://erherhrhs.zohodesk.com/portal/en/kb/articles/c%C3%B3mo-hablo-con-una-persona-de-delta-estados-unidos

https://intercom.help/infanthelp/en/articles/11637024-what-to-do-if-you-forgot-to-add-your-infant-to-an-united-flight-helps-support

https://erherhrhs.zohodesk.com/portal/en/kb/articles/c%C3%B3mo-hablar-con-un-asesor-de-delta-delta-servicio-telefono

https://www.orangetractortalks.com/forums/threads/05-ways-to-contact-how-to-speak-to-someone-at-southwest-airlines-through-contact-options-a-complete-step-by-step-guide.75404/

https://intercom.help/infanthelp/en/articles/11637022-step-by-step-add-a-lap-infant-to-your-united-airlines-ticket-full-help

https://www.orangetractortalks.com/forums/threads/nine-ways-to-call-to-how-to-reach-live-person-at-carnival-cruise-speak-with-a-representative-now.75406/

https://www.orangetractortalks.com/forums/threads/6-simple-ways-to-connect-with-a-live-agent-at-american-airlines.75407/