The Transportation Security Administration is getting ready to take over responsibility from the airlines for checking passengers’ names against terrorist watch lists, and is advising travelers to start booking airline tickets using their full name as it appears on their driver’s license or passport.

Later this summer, the agency will also begin requiring airlines to ask passengers for their birth date and gender during the ticketing process, information the carriers will then transfer to the T.S.A. The goal is to help make the watch list matching process more accurate.

But it turns out that what’s in a name is more complicated than many reservation systems are currently prepared to handle. So the airlines are telling passengers not to worry if there is no place to enter a middle name when purchasing a ticket, or no field for a date of birth.

“I think the most important thing for passengers to know is that when their airline is ready to ask for that information, they’ll ask for it,” said Tim Wagner, a spokesman for American Airlines  advice that was echoed by other carriers.