Lufthansa resumed flight operations early Saturday, hours after the most severe strike in the German airline's history ended. "We assume that there will be no more problems also at the major airports in Frankfurt and Munich," a company spokesman was quoted as saying by dpa. The cabin crew strike ended at midnight. On Friday, Lufthansa grounded nearly 1,000 flights, affecting more than 100,000 travelers. Lufthansa and its cabin crew union, Ufo, agreed to mediation late Friday. The union is demanding better pay and job protection, in a long-running dispute that saw three strikes in the past week.