in the sh!t hole of the world, IAD, i had a passenger ask the gate agent if he was boarding the right airplane to Columbia SC. The gate agent, not having a good grasp of the english language, told the passenger he was going in the right direction. However, that direction was to my airplane going to Columbus OH. Of course the gate agent couldnt figure out what was going on until my FA asked if everyone on board was going to CMH and this guy stood up and said he was going to Columbia SC. By then the flight to Columbia had already pushed.