Lena Dunham took to Twitter on Thursday to complain about two American Airlines employees she claimed to have overheard engaging in “Transphobic talk” – but the airline has since stated that they are “Unable to substantiate” Dunham’s version of events.

“We always look into complaints from customers, but at this time, we are unable to substantiate these allegations,” American Airlines tells Fox News.

UNITED PASSENGER ACCUSED OF GROPING TEEN GIRL WHILE SHE SLEPT. Dunham first tweeted about the incident early on Thursday morning, while she said she was waiting for her delayed flight to depart from JFK International Airport in New York.

FOLLOW US ON FACEBOOK FOR MORE FOX LIFESTYLE NEWS. In screenshots of their subsequent direct-messaging conversation, Dunham revealed that she heard the AA attendants say “Trans kids are a trend[,] they’d never accept a trans kid and transness is gross.”

ABC News reported that Dunham’s Instagram story appeared to show her flying on Delta Air Lines, which does in fact operate out of Terminal 4.

NAKED PASSENGER DELAYS SPIRIT FLIGHT LEAVING FROM LAS VEGAS. American Airlines has confirmed to Fox News that they are investigating the complaint, but stressed that they celebrate diversity and inclusivity.

“From the team members we hire to the customers we serve, inclusion and diversity is a way of life at American Airlines,” the airline wrote in a statement obtained by Fox News.

Dozens of Dunham’s critics are taking her to task over the allegations, some of whom are even calling her account into question.