They must give Another option i guess. Or else request the airline if they could issue you the copy. In my case i still have my forst ticket which was frm 2010 but they never asked me. If they didnt give another option u better call themI got a document request yesterday in documents request they asked about the ticket when I first time travel to Canada it's being on January 31, 2014.
It's being a long time. Now, do not have the ticket but have the stamped passport, visa and visitor permit. ANY IDEA? Do I really need a ticket ? or these three documents would serve the purpose (Stamped passport, visa, visitor permit)?