HOUSTONCHRONICLEHalliburton will have a new chief executive in June after longtime CEO Dave Lesar steps down from the day-to-day operations of the Houston energy services company. Halliburton President Jeff Miller is adding the CEO job to his title at the world's second-largest energy services provider, while Lesar will continue to serve as the executive chairman of the board through 2018. Lesar took over as CEO in 2000 when his predecessor, Dick Cheney, agreed to serve as George W. Bush's running mate. Analysts said the departure of Lesar, who turns 65 next year, was largely expected, as was the elevation of the 53-year-old Miller, who was groomed as Lesar's successor. Miller, who joined Halliburton 20 years ago, was promoted to president in mid-2014.