United Airlines is the first off the ground company to affirm the transgender ideology by introducing non-binary gender booking options.

United’s Chief Customer Officer Toby Enqvist said, “United is determined to lead the industry in LGBT inclusivity, and we are so proud to be the first U.S. airline to offer these inclusive booking options for our customers.”

The airline announced last week non-binary gender options will be available for all bookings, check-ins, through all customer reward programs, and company memberships.

Every customer now has the option to identify as male (M), female (F), undisclosed (U) or unspecified (X) on their travel documents.

“United is excited to share with our customers, whether they identify along the binary of male or female or not, that we are taking the steps to exhibit our care for them while also providing additional employee training to make us even more welcoming for all customers and employees,” Enqvist said.

The airline said it’s also worked with the Human Rights Campaign and the Trevor Project to train employees “about preferred pronouns and persistence of gender norms.”

A tweet from the airline’s official Twitter account announced the change saying: “Fly how you identify.” Try moving us from first class now, bigots!