A pair of Air Canada insiders are shedding light on the airline's policy of overselling flights, revealing what they say is a widespread practice of duping passengers into believing they have a seat on a plane and stringing them along until the last possible moment. As a way to try to maximize revenues, airlines are allowed to sell more plane tickets for a flight than there are available seats, but the former and current ticket agents who spoke with Go Public say Air Canada is less than transparent with customers who are likely to be denied boarding because a flight has been oversold. Read more on NewsOK.com