And what is a note going to do?
In theory, this should require a 'name change' for the ticket. I've heard of check-in agents doing this for free, but I've only heard of call centers doing it for a fee.
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Exactly. It's the TSA and/or Customs that are going to be concerned and they have no ability to reference the passenger's reservation. Is it a vowel in the middle of the name or does it appear to change the name entirely (ie., Janes versus Jones) ?