Furthermore, cancelling your current reservation is simple and requires no additional work. Just make sure you understand the cancellation policy's terms and limitations. This policy can be understood without the help of an expert. Examine the data and cancel your reservation as soon as possible.
See: United Airlines Cancellation Policy || Hawaiian Airlines Cancellation Policy || JetBlue Cancellation Policy
In this above post given it a guidence about a united airlines cancellation policy and give a direction for easily understand it scenario.
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