Ryanair Holdings Plc will meet with the U.K. aviation regulator in an effort to avoid penalties stemming from claims that it has failed to properly inform customers of their rights following the cancellation of more than 20,000 flights. The Civil Aviation Authority has begun an enforcement action accusing Ryanair of "persistently misleading" some 715,000 passengers about their legal entitlements, according to its website. The Dublin-based company will "comply fully with whatever requirements they ask us to," a spokesman said Thursday. Ryanair shares fell 3.7 percent.