Gamson, who said he clearly told the British Airways agent over the phone Granada, Spain, didn't notice the mistake because his e-tickets did not contain the airport code or the duration of the trip. It was only 20 minutes after departure from a stopover in London that he looked at the in-flight map and asked the flight attendant, "Why are we headed west to go to Spain?"
"His response was: 'Spain? We're going to West Indies,' " Gamson said.
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After nearly three days of transit, Gamson just barely made it to the conference, but his vacation was ruined: He's out the more than 375,000 frequent-flier miles he had used to book his first-class tickets, and he said the airline was less than helpful.
British Airways offered him and his partner $376 each and 50,000 miles, Gamson said. But he figured the pre-booked hotels, trains and other tours they had planned cost upward of $34,000. So he sued the airline, and he's representing himself.
"I have no legal background; I'm a dentist, but I know right from wrong — I don't know if that does you any good in this world," Gamson told NBC News.
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"I really thought they would just want to settle with me, because it's so apparent that it's just a stupid mistake," he said.