Again, we use the three pieces of data that are first given to us. One is the name, one is the date of birth, and the third is the gender. So while there may be many common names, people with the same date of birth are far less common, although I would certainly note that it's not impossible. If the name and the gender and the date of birth all match, the call would then be placed to us. We have more information on these individuals on file and then we can converse with the airline to determine whether or not the person who is standing in front of them is indeed the person who is on the list.
On April 29th, 2010. See this statement in context.