"Thank you for a great talk last night, I think everyone enjoyed it and found it most interestings."
"Thank you for a very interesting talk. The Zoom meeting seemed to work very well. Regards."
For the future the attractions of Zoom meetings and talks is bright. Gone is driving in the dark, with a lack of parking and a hard chair to a meeting. The West Middlesex FHS has set an excellent example of all the pros and the cons of Zoom.