https://scholarsglobe.com/blog/4-fast-ways-to-get-in-touch-with-frontier-airlines-customer-support-phone-email-chat/
https://scholarsglobe.com/blog/ways-to-reach-lufthansa-airline-via-phone-email-and-live-chat-for-assistance/
https://airlines-help.document360.io/docs/top-methods-to-reach-air-europa-for-booking-help-delays-or-flight-issues
https://scholarsglobe.com/blog/4-effective-ways-to-contact-frontier-a-step-by-step-customer-service-guide/
https://travelguides.odoo.com/blog/lufthansa-airlines-552/4-best-ways-to-contact-lufthansa-customer-service-phone-email-chat-explained-4696
