My sangfroid usually allows me to brush these things off, considering that the vast majority of my interactions have been positive. That said, a gorgeous blond who I flew out for a weekend to LA from Detroit and with whom I had a marvelous time failed to appear for a weekend in Philadelphia months later, with no response. The fare was around a little over a hundred bucks, so I shrugged and called Premier and ordered in a doppelgänger.