Looking for an event space for college graduation

We have to find our own venue for our pinning ceremony. Looking for some places that can accommodate 350 ish people. Inside, chairs provided or available preferred. Date we are aiming for is June 21. Doesn't necessarily have to to Memphis, surrounding areas are fine, even Mississippi/Arkansas. We've already contacted a lot of churches in the area, specifically Bellevue, and they are not available and/or cannot accommodate for the amount of people we have. 😭