The thread title and the description in the first post do differ as to which way around it is.

Thread title: Married on passport, maiden on booking.
Post detail: Maiden on passport, married on booking.

Given that you are married the married name could be considered the 'new' one (big assumption that someone will change their name).

Some places might take a different view between the ticket being under the 'old' name, vs the passport being under the 'old' name.
One potentially being classed as a simple ticket name error, the other potentially being classed a as a passport issue.