https://forums.serebii.net/threads/ways-to-reach-lufthansa-priceline-customer-service-by-phone-chat-a-smart-start-guide.782359/

https://support.google.com/edu/classroom/thread/337957180?hl=en&sjid=12445409142137887004-NC

https://support.google.com/edu/classroom/thread/337956747?hl=en&sjid=12445409142137887004-NC

https://support.google.com/edu/classroom/thread/337956461?hl=en&sjid=4266165195400771554-NC

https://forums.serebii.net/threads/9-ways-to-contact-ethiopian-airlines-for-flight-changes-refunds-and-special-services.782356/

https://support.google.com/edu/classroom/thread/337956368?hl=en&sjid=4266165195400771554-NC

https://support.google.com/edu/classroom/thread/337956092?hl=en&sjid=4266165195400771554-NC

https://forums.serebii.net/threads/9-ways-to-reach-aer-lingus-customer-service-for-booking-refunds-and-travel-support.782351/

https://support.google.com/calendar/thread/337957079?hl=en&sjid=13566236968514811898-NA

https://forums.serebii.net/threads/4-easy-contact-methods-for-air-new-zealand-phone-email-and-chat-options-you-can-use-now.782348/