Hi,       i bought air canda ticket few months ago to travel london but due to certain reason i cant travel, so i end up with getting a credit which is transferable( anyone can use it to travel anywhere) from air canada.  so anyone who is  willing to travel with air canada can use my credit . i got the credit of $500 and i am willing to sell it on $450, so buyer can get save $50.  let me know, if anyone is interested on it. Thanks atul