https://customerhelp247.zohodesk.com/portal/en/kb/articles/official-desk-what-is-the-cancellation-policy-with-lufthansa 

https://customerhelp247.zohodesk.com/portal/en/kb/articles/cheapest-days-what-days-are-delta-tickets-cheapest 

https://customerhelp247.zohodesk.com/portal/en/kb/articles/delta-eligible-process-does-delta-have-a-senior-discount 

 

https://airlinessupportteams.zohodesk.com/portal/en/kb/articles/how-do-i-ask-a-question-on-expedia-fastest-way 

https://airlinessupportteams.zohodesk.com/portal/en/kb/articles/usa-what-is-the-24-hour-policy-expedia-easy-customer-guide 

https://www.cucei.udg.mx/carreras/alimentos/sites/default/files/webform/quickguide_does_expedia_allow_name_changes_.pdf 

https://airlinessupportteams.zohodesk.com/portal/en/kb/articles/how-do-i-get-my-refund-from-expedia-full-refund 

https://airlinessupportteams.zohodesk.com/portal/en/kb/articles/discount-day-what-is-the-cheapest-day-to-buy-flights-on-expedia 

https://fairygodboss.com/community-discussion/ubTkzzvT0/how-to-get-senior-citizen?utm_source=link&utm_medium=content-share 

https://fairygodboss.com/community-discussion/ubTkzzvT0/how-to-get-senior-citizen?utm_source=link&utm_medium=content-share 

https://www.cucei.udg.mx/carreras/alimentos/sites/default/files/webform/how_to_reserve_a_delta_flight_1_888_287-4045_without_paying.pdf 

https://www.cucei.udg.mx/carreras/alimentos/sites/default/files/webform/_does_expedia_allow_name_changes_heres_what_you_need_to_know.pdf 

https://www.cucei.udg.mx/carreras/alimentos/sites/default/files/webform/does_expedia_allow_name_changes_a_complete_guide_to_understanding_their_policy.pdf 

https://www.goodreads.com/quotes/13613852-complete-guide-what-is-the-fully-refundable-option-on-expedia-if-you 

https://www.cucei.udg.mx/carreras/alimentos/sites/default/files/webform/how-do-i-speak-a-question-at-expedia_.pdf