Teacher:In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Teacher: Now, understand the problem? Solve this instance: Wake the neighbors and phone the kids — David Letterman has announced his retirement. 
  
 The late-night TV vet will hang up his Top Ten lists and such in 2015, he shared with the audience at the taping of Thursday’s Late Show With David Letterman, to air at 11:35 pm EST (scroll down to watch the announcement). 
  
 PHOTOS | David Letterman Retires: 13 Possible Late Show Replacements 
  
 Letterman said he phoned CBS boss Leslie Moonves “just before the program, and I said ‘Leslie, it’s been great, you’ve been great, and the network has been great, but I’m retiring.’ 
  
 “I just want to reiterate my thanks for the support from the network, all of the people who have worked here, all of the people in the theater, all the people on the staff, everybody at home, thank you very much,” he continued. “We don’t have the timetable for this precisely down – I think it will be at least a year or so, but sometime in the not too distant future, 2015 for the love of God, in fact, Paul and I will be wrapping things up.” 
  
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 Oddly enough, R.E.M. bassist Mike Mills, who is joining tonight’s musical guest Joseph Arthur, broke the news on Twitter. 
  
 Dave just announced his retirement #2015 #muchlovedave — Mike Mills (@m_millsey) April 3, 2014 
  
 Letterman’s rise to stardom began in 1978, the year he made the first of 22 appearances on NBC’s The Tonight Show Starring Johnny Carson (where he would later go on to serve as a regular guest host). The Peacock net eventually gave the comic his own series in the post-Carson timeslot — Late Night with David Letterman — which premiered in 1982 and earned five Emmy awards during its 11-year run. After NBC awarded the Tonight Show hosting gig to Jay Leno following Carson’s retirement in 1992, though, Letterman jumped ship and launched Late Show with David Letterman at CBS the following year — where he’s roosted ever since. In all, Letterman’s shows have been nominated for 67 Emmys, winning 12; he also received a Peabody Award in 1992. 
  
 His announcement comes a little more than a month after longtime rival, Jay Leno, handed the Tonight Show reins over to Jimmy Fallon. 
  
 In a statement, Moonves said, “When Dave decided on a one-year extension for his most recent contract, we knew this day was getting closer, but that doesn’t make the moment any less poignant for us. For 21 years, David Letterman has graced our Network’s air in late night with wit, gravitas and brilliance unique in the history of our medium. During that time, Dave has given television audiences thousands of hours of comedic entertainment, the sharpest interviews in late night, and brilliant moments of candor and perspective around national events. He’s also managed to keep many celebrities, politicians and executives on their toes – including me. There is only one David Letterman. His greatness will always be remembered here, and he will certainly sit among the pantheon of this business. On a personal note, it’s been a privilege to get to know Dave and to enjoy a terrific relationship. It’s going to be tough to say goodbye. Fortunately, we won’t have to do that for another year or so. Until then, we look forward to celebrating Dave’s remarkable show and incredible talents.” ||||| NEW YORK (AP) — David Letterman says he's retiring next year as host of "Late Show." 
  
 During a taping of Thursday's show, Letterman said he has informed his CBS bosses that he will step down in 2015, when his current contract expires. 
  
 He told his audience he expects his departure will be "at least a year or so" from now. 
  
 Letterman turns 67 next week. He has the longest tenure of any late-night talk show host in U.S. television history, nearing 32 years since he created "Late Night" at NBC in 1982. 
  
 He jumped to CBS to start "Late Show" in 1993. 
  
 Jay Leno, his rival to host NBC's "Tonight Show," retired earlier this year, making way for Jimmy Fallon. |||||
Student:
David Letterman is signing off after more than 30 years in the late-night business, reports TVLine.com. The host said during the taping of tonight's show that he will step down in 2015, reports AP. Bassist Mike Mills of REM, who appears on the show, first broke the news on Twitter: "Dave just announced his retirement," he wrote. Letterman has hosted CBS' Late Show for 21 years, after 11 years at NBC's Late Night. Letterman told the audience that he phoned CBS chief Leslie Moonves before the taping, "and I said, 'Leslie, it’s been great, you’ve been great, and the network has been great, but I’m retiring,'" according to the Hollywood Reporter. As the audience gave him a standing ovation, Letterman added, "We don’t have the timetable for this precisely down—I think it will be at least a year or so, but sometime in the not too distant future, 2015 for the love of God, in fact, Paul and I will be wrapping things up.” The announcement comes just weeks after Jimmy Fallon replaced Jay Leno at NBC. Business Insider reports that Craig Ferguson is believed to have the first right of refusal to replace Letterman in the 11:30 time slot. Letterman, who turns 67 next week, recently passed Johnny Carson as the longest late-night host in TV history.