https://www.steadyhealth.com/topics/telefono-de-atencion-al-cliente-de-delta-airlines-las-24-horas-en-espanol
https://intercom.help/airlines-support-aefaa9296861/en/articles/10790565-call-how-do-i-know-if-my-%F0%9D%96%80nited-%F0%9D%95%B0conomy-ticket-is-refundable
http://patch.com/new-york/new-york-city/calendar/event/20250316/2a96e106-b6c4-4e18-b1c1-c5892e6b3481/faq-expedia-es-realmente-la-cancelacin-gratuita
https://intercom.help/freelancer-0f704c8893aa/en/articles/10789590-flexibile-details-what-does-nonrefundable-mean-on-expedia
