WASHINGTON, May 7 (Reuters) - House and Senate

negotiators have agreed to revise language on airline passenger

refunds after some lawmakers raised concerns.

On April 24, the U.S. Transportation Department finalized

new rules requiring automatic cash refunds for canceled flights

when passengers choose not to take a new flight. A bipartisan

proposal in Congress released last week said passengers must

request the refunds. The revised language makes refunds

automatic in many instances but also makes clear they would not

apply if passengers are rebooked and accept a new flight.