https://forum.soliditylang.org/t/complete-list-of-united-airlines-customer-service-s-24-7-live-person-care-contact-numbers-an-assistance-guide/3567 
https://forum.soliditylang.org/t/complete-list-of-latam-airlines-customer-service-s-24-7-live-person-care-contact-numbers-an-assistance-guide/3573             https://forum.soliditylang.org/t/complete-list-of-jetblue-airlines-customer-service-contact-numbers-24-7-live-person-assistance-guide/3581                         https://forum.soliditylang.org/t/complete-list-of-asiana-airlines-customer-service-contact-numbers-24-7-live-person-assistance-guide/3587                          https://forum.soliditylang.org/t/faqs-full-list-of-klm-customer-service-24-7-live-person-support-numbers-a-complete-guide/3588 
https://forum.soliditylang.org/t/faqs-full-list-of-air-france-customer-service-24-7-live-person-support-numbers-a-complete-guide/3594