Originally Posted by
emptiness
My knowledge is if i book today for December 30th flight and I can't travel for any reason on that day, I can call early december for a date change up to one year like in December 2013.
No.
If I want to travel in Mid 2013, I can call again to have the date moved from Dec 2013 to travel date of June 2013 ? travel date can be changed within the year?
If you book today, you can't extend the travel date to Dec 2013. You can move it to June 2013 because that's less than one year out from today. This assumes you can find availability in June. If you cannot find an award seat on another date - one that falls within 1 year from the day you booked the original trip - you are out of luck. You will either have to pay $150 or loose the miles.
You still seem confused. I would suggest that you review the comments already made here and, if necessary, call AAdvantage reservations with your questions.