https://support.google.com/edu/classroom/thread/335150081?hl=en&sjid=1601167586375686686-NA

https://community.ring.com/conversations/ring-device-tips/dayoffer-what-is-the-cheapest-day-to-buy-tickets-on/67eb65aa66bea62fe182da45

https://intercom.help/air-united/en/articles/11009048-cual-es-la-mejor-manera-de-contactar-con-el-servicio-de-atencion-al-cliente-de-delta-airlines

https://www.goodreads.com/quotes/12687960-support-how-to-escalate-an-issue-with-to-escalate

https://www.goodreads.com/quotes/12689089-how-do-i-get-a-human-at-expedia

https://support.google.com/edu/classroom/thread/335150000?hl=en&sjid=12693051924543103102-NA

https://patch.com/california/newark/calendar/event/20250402/74f885f2-2a16-40b1-b13c-fe66719e98c6/can-i-cancel-my—flight-and-get-a-refund-refund-policy

https://intercom.help/help-a88ff60860f0/en/articles/11009514-como-hablo-con-un-agente-de-klm

https://www.goodreads.com/quotes/12689089-how-do-i-get-a-human-at-expedia

https://www.goodreads.com/quotes/12687960-support-how-to-escalate-an-issue-with-to-escalate