My 12 year old granddaughter is flying from LHR to BOS unaccompanied using an AA award ticket and I just received an email from AA saying that her flight back to London now has a transfer in Chicago. I called AA to tell them that they cannot schedule her on anything but a direct flight because of her age, they told me that if I want a morning flight (which is what I originally booked), my options were a) an evening flight which arrives the next morning, or b) a partner British Airways flight that leaves around the same time as the original flight, but I would have to pay $214 more in taxes. The original morning flight that I booked is no longer offered by AA. Before I make my decision, I wanted to find out if they are obligated to find me a similar flight and whether they can indeed charge me more taxes when it is a flight that was booked a month or more ago. Any thoughts?