https://www.devex.com/people/does-qatar-allow-free-date-change-general-faqs-2371513

https://tabellaesupport.microsoftcrmportals.com/forums/general-discussion/ad231b68-61ca-ef11-a81b-0022489f0209

https://www.devex.com/people/what-is-the-cancelation-policy-for-klm-cancel_policy-2371621

https://www.devex.com/people/does-klm-offer-free-cancellation-policy-brief-guide-2371534

https://www.yelp.com/biz_photos/singapore-airlines-san-francisco-7?select=lpV4WERIcBe-Lx7Uh8dNDg&utm_campaign=www_photo_share_popup&utm_medium=copy_link&utm_source=%28direct%29

https://www.devex.com/people/can-i-cancel-lufthansa-24-hours-after-booking-helpsesk-2371709

https://www.devex.com/people/can-i-cancel-qatar-airways-within-24-hours-without-fees-2371895

https://tabellaesupport.microsoftcrmportals.com/forums/general-discussion/50336d3c-54ca-ef11-a81b-0022489f0209

https://www.devex.com/people/can-i-cancel-qatar-airways-within-24-hours-without-fees-2371440

https://www.devex.com/people/new-_-policy-how-long-does-delta-give-you-to-cancel-2370924