Flights between Bermuda and Toronto could be cancelled today as Air Canada flight attendants yesterday remained on course to strike.The airline announced that it would modify its schedule to serve the greatest number of passengers on the airlines’ higher demand domestic and trans-border routes.In a statement, Air Canada Chief Operating Officer Duncan Dee said: “We regret the inconvenience the ongoing labour uncertainty is creating for our customers and we thank them for their patience.“We are fully committed to reaching a negotiated agreement with CUPE (Canadian Union for Public Employees) prior to the strike deadline.”Negotiations between the airline and the CUPE, representing around 6,800 flight attendants, reportedly broke down on Monday.CUPE filed a strike notice on September 16, warning of industrial action, which could begin as soon as 12.01am today. Key negotiating points include pensions for new hires, salaries and working conditions.Canadian Federal Labour Minister Lisa Raitt said back-to-work legislation was being prepared, but could not be tabled before today.With the threat of a strike looming, the airline announced that it was introducing a flexible rebooking policy to help passengers booked for travel over the next six days the opportunity to change their flights without rebooking fees.Passengers whose flights have been cancelled will also have the option of refunds.Useful website: www.aircanada.com.