I need to create a virtual event or meeting show

Hello This project is only for people who are experts in virtual events / conferences. I need to create a virtual event for one day or two days for travel business. Following are the details of the Requirements. 1. We will invite people to register via email 2. Tentatively we can say we will have 30 sponsors (sellers )and 1000 attendees ( buyers ) pproximately 3. The sellers and buyers should be able to pre schedule their meetings in advance 4. Artificial intelligence is required to find the best match for meetings based on the criterias selected 5. Before the meetings start will have a panel discussion as well which should go live on Facebook. 6. Sellers and buyers should be able to email each other, exchange brochures or business cards and make video calls to each other. 7. I would prefer everything to be whitelabeled if possible. 8. If required you can club different softwares for different Things. You need to make sure the cost is not very high. I can pay softwares separately and pay you consultancy as well.