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https://supportcommunity.milestonesys.com/s/question/0D5bH00000ZDy92SAD/18667380729-can-i-cancel-a-singapore-airlines-ticket-within-24-hours-askrepresentativehttps://supportcommunity.milestonesys.com/s/question/0D5bH00000ZDy92SAD/18667380729-can-i-cancel-a-singapore-airlines-ticket-within-24-hours-askrepresentative