I set up the date, went to the hotel and called from the lobby as instructed. She said she would be right down. I waited 10 min, called again no answer, wait more called again no answer. Time for these opportunities is precious, I hate when it is wasted. Why not just say no in the first place.
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Some other guy probably got there and called a few seconds before you did. They typically keep a backup appt on hold in case the other guy changes his mind and either doesnt show or leaves after getting a close look.