"I met you at [insert the name of the networking event]. I thought that perhaps you could advise me on other worthwhile organizations that I can join to meet [insert classification(s) of people who hire you] who hire [insert your classification], such as myself."
Now the person knows you're looking for work in your classification, yet you didn't put him/her on the spot. If they are interested they'll offer. If they aren't, at least you've given them something they can say YES to.
For more tips and articles by top entertainment industry career coach, The Greenlight Coach, visit www.theGreenlightCoachBlog.com