It will probably be switched to an A319.

On one particular flight that I take about every other month the website always shows the 737-700 with two rows of First Class until a month or so before the flight, then it switches to an A319 (and different flight number, of course). This has happened several times over the second half of 2014.

On the return flight from the same trip the website always shows a 737-700 with three rows of First Class and that particular flight is always operated by that aircraft.

I find this extremely odd, and believe it must be one of the contributing factors to the poor operational performance of United since the merger. Too many changes, too many swaps, too many customers losing seats and being moved, requiring the check-in agents and gate agents to need to spend extra time "fixing" seats, too many ramp agents at an outstation not realizing that on Tuesday a flight that is normally an A319 is a 737-900 and will take more baggage carts to unload so the bags take forever to arrive at baggage claim. And so on, and so on, and so on.

I realize matching capacity to demand is smart business, but it puts a strain on operations that clearly has not been resolved yet.

Please United...recognize that your employees are struggling to provide the level of service your customers expect...and you are not making it easy on them.