CrowdStrike Holdings Inc. says the management of Delta Air Strains Inc. failed to answer an be offering for help within the wake of final month’s catastrophic gadget outage that ended in hundreds of canceled flights and a federal investigation of the United States service.The allegation, in a letter Sunday from lawyers for the generation company, builds upon CrowdStrike’s declare final week that Delta rejected its repeated makes an attempt to assist. CrowdStrike stated Sunday that its leader government officer, George Kurtz, attempted to hook up with his counterpart on the airline, Delta CEO Ed Bastian.