All cancellations requests must be made in writing to email@example.com Requests received before February 19, 2021 will receive a full refund. Requests received between February 19, 2021 and March 12, 2021 will receive a 50% refund. Refunds will not be issued after March 12, 2021.
If hotel rooms have been reserved in the SIGMA block, they must be cancelled prior to receiving any eligible refund.
Please contact SIGMA at firstname.lastname@example.org or 703-709-7000 ext.1487 if you have any questions