https://www.efestivals.co.uk/forums/topic/261768-four-best-ways-to-cancel-your-united-airlines%C2%AE-flight-detailed-guide/
https://www.independent.com/wp-content/uploads/ninja-forms/8/the-15-ways-to-connect-air-canada-customer-service-by-phone-live-chat-and-email-options.pdf
