https://club.autodoc.co.uk/forum/topic/8-ways-to-talk-to-live-agent-at-frontier-airline%ef%b8%8f-a-complete-guide-2
https://forum.skylords.eu/index.php?/topic/13404-seven-ways-to-connect-how-can-i-speak-to-someone-at-expedia%C2%AE-via-phone-a-complete-extended-guide/
https://writers.coverfly.com/projects/view/db7aa0be-09ed-40d3-9ee8-7c5b35a9963b/How_much_is_the_senior_discount_on__Airlines