By David Koenig

The Associated Press

DALLAS — American, Delta, United, Southwest, Alaska and JetBlue confirmed Friday they are in the process of updating their booking tools and plan to add a nonbinary option to the gender menu on their sites. They said the change will be made in the next several weeks.

The airlines say they are making the change to be more inclusive. The move was praised by advocacy groups for transgender people.

“It’s a significant step forward for nonbinary individuals, so they are not faced with a mismatch between their ticketing information and their legal identification,” said Beck Bailey of the Human Rights Campaign.

The Transportation Security Administration says passengers should use the name, gender and birth date on their government-issued ID.

United Airlines plans to let people select M for male, F for female, U for undisclosed or X for unspecified from the gender menu when booking a ticket on its website or mobile app, said spokesperson Andrea Hiller. They will also have the option of picking “Mx.” as a title.

U.S. and international airline trade groups recently approved new guidanceto handle customers with “nonbinary” IDs.

In 2017, Oregon became the first state to let residents identify themselves as neither male nor female on driver licenses and other ID cards.