SIOUX FALLS, S.D. (MITCHELLNOW) The Sioux Falls Convention Center has issued a warning about a fake vendor show being advertised on social media. In a post on their Facebook page, the convention center says the Small Biz Spring Fling has been shared across local arts and vendor pages. But the convention center says no bookings have been made for the dates listed, and the arena has not been reserved by any organizer. Sioux Falls Convention Center officials are advising people not to contact the email in the post which they believe to be a fake account.