Alaska Airlines has announced a reduction in flight departures and up to 1000 job cuts in response to record oil prices and the slowing economy.   Starting in November, the Seattle-based airline will reduce its capacity by about 8 percent, eliminating some flights to popular destinations in California and Mexico and canceling low-demand flights.   The airline lost $50 million in the first half of the year and said it needed to take "decisive action." The job cuts, representing about 10 percent of the workforce, will also begin in November and affect pilots, cabin cre

