If they ask, you could tell them...more than likely they are not going to ask. Right now because everyone is hiring, the recruiters/interviewers know that folks are interviewing with multiple airlines. Interviewing at more than one AA WO is no different than interviewing at any other airlines.

If you do interview at more than one airline, then I would recommend only accepting/selecting a class date for your first choice airline and ask to be put in the pool for any other CJOs that I received. If you decide to change which one you are going with then you call them and ask to be pulled out of the pool into a class. Others might recommend selecting a class date with any CJOs and then calling and cancelling later on so that you get the date you want. Your call on how you handle it.

In my case, because my availability date was a bit of a moving target I asked to be put in the pool with all my CJOs. Once I knew for sure when I was going to be available and which airline I was going to go with I called and they were able to put me into the first class after my date. I'm still in the pools with the other airlines I have CJOs with.