(Well, it was really) nice meeting you.
There are one or two other people who I should introduce myself to, so...
I’d better get to the next workshop before it starts./I’ll contact you next week.
I hope we have the chance to meet again soon/ at the next meeting.
It’s been really interesting talking to you. I’ll contact you for more details about…/
I’ll definitely follow you suggestion on…/ I’ll look into…