https://support.google.com/edu/classroom/thread/330629711/faq-s-know-more-is-air-france-open-on-24-hours
https://www.goodreads.com/quotes/12646100-a-i-cancellation-policy-is-expedia-really-free-cancellation-the
https://travel4092.zendesk.com/hc/en-us/community/posts/34868848124443–Travel-Helpdesk-What-is-the-refundable-option-on-Expedia
