https://www.devex.com/people/how-do-i-edit-date-on-United-airlines-flight-ticket-reservation-2205892
https://www.devex.com/people/how-to-reschedule-date-on-United-flight-ticket-2205955
https://www.devex.com/people/can-i-change-my-flight-time-on-United-airlines-ticket-2205972
https://www.devex.com/people/how-close-to-departure-can-i-cancel-a-flight-United -2206269
https://www.devex.com/people/how-to-change-date-on-volaris-flight-ticket-change-flight-policy-2206294