One option others have offered, though I haven't tried it myself, is to call an overseas AA ticketing line.

A couple of times last year calling the UA reservations line, I was given a text option, which worked out pretty well in terms of quickness and service (though not sure why that made sense from UA's point of view, since it would seem to occupy the agent's time at least as much as a call would). No experience with that this year and certainly no expectation that AA would offer that option.