Wirelessly posted (iPhone 4: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)
Did the rep say it is assigned as bassinet or assigned as normal passenger? If you search here I think you can always request those 2 seats with a acknowledgement that you will return if seats are needed for bassinet.
If it's former I will try change if its feasible to schedule or get the best noise canceling year plug.