There can't be any unofficial exchanges of phone numbers, either.
At the end of the rounds, each person writes on an index card the name of a person he or she would like to see again.
At 24, Cindy Urman says she's still too young to get married and settle down.
But when she does, it's going to be with a Jewish man.
"I used to think that I was limiting myself by dating only Jewish guys," says Urman, an entertainment-industry publicist who lives in Chicago.