The Ballet West ticket office has been deluged with calls inquiring about the status of tickets for the Feb. 15-23 season. The program originally announced was the new "Lord Byron," which has been postponed until fall and replaced by "The Sleeping Beauty." Season ticket holders and those with single tickets to this production need not exchange tickets before attending "The Sleeping Beauty," according to publicist Cindy Elliot. Just give tickets imprinted "Lord Byron" to the usher upon entering the theater and they will be honored.