https://unitedinfant.helpshift.com/hc/faq/977-comprehensive-guide-how-to-call-qantas-airlines-via-phone-email-and-chat/

https://support.google.com/edu/classroom/thread/330058274?hl=en&sjid=17355747391202496548-NA

https://unitedinfant.helpshift.com/hc/faq/958-ways-to-call-to-hawaiian-airlines-by-phone-email-and-chat-guide/

https://support.google.com/edu/classroom/thread/330056985?hl=en&sjid=4321752901145135168-NA

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https://www.goodreads.com/quotes/12636387-how-do-i-complain-to-expedia-to-file-a-complaint

https://flywithair.helpshift.com/hc/faq/3353-how-to-get-in-touch-with-lufthansa-airlines-customer-service-refunds-and-compensation/

https://support.google.com/edu/classroom/thread/330055591?hl=en&sjid=7958835390611129480-NC

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