What is the cancelation policy for United Airlines?

What is the cancelation policy for United Airlines? 𝒰nited Airlines allows passengers to cancel their flights within 24 ho𝒰rs of booking for a f𝒰ll ref𝒰nd +̳1̳ ̳8̳3̳3̳ ̳(̳8̳1̳6̳)̳ ̳0̳0̳9̳8̳, 

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• Country List: United States