Deutsche Lufthansa Chief Executive Officer Christoph Franz

Deutsche Lufthansa Chief Executive Officer Christoph Franz

Ralph Orlowski/Bloomberg

Chief Executive Officer Christoph Franz, who leaves Lufthansa next year to become chairman of Swiss drugmaker Roche Holding AG, said he was “surprised” by the rapid success of the revamp and parallel efforts to stimulate demand. “Hopefully we can continue in the same direction in the next two years,” he said.