Complex sentence: On November 6,2006, Mesa Airlines announced that new non-stop service to Chicago Midway International Airport and Kirksville Regional Airport would begin in February, 2007 operated by their wholly-owned subsidiary, Air Midwest.
Split into simpler sentences: On November 6,2006, Mesa Airlines announced that new non-stop service to Chicago Midway International Airport and Kirksville Regional Airport would begin in February, 2007. The flights are operated under the name of their wholly-owned subsidiary, Air Midwest.