The union representing Air Canada flight attendants has voted to go in strike, the airline said today.In an update to travel agents, the company said: "Air Canada has received a strike notice from the Canadian Union of Public Employees which represents the airline's 6,000 flight attendants, confirming the union's intention to begin a strike at 12.01am on Wednesday.'Talks between the parties are ongoing and will continue prior to the strike deadline, assisted by federally- appointed mediators."However, in recognition of the uncertainty for customers this situation may cause, Air Canada has introduced a felxible rebooking policy to enable customers booked for travel over the next six days on a rolling window basis to change flights free of charge to a later date until December 9, 2011, subject to availability."In the event of a work disruption, Air Canada will implement a partial schedule including codeshare flights operated by its partner airlines."For more information go to www.aircanada.com