Most Helpful Girl
Maybe try a mental list of interesting topics and a couple of "get to know them" type questions... but I've never been on a real date, so I wouldn't know.
Most Helpful Guy
I think most everyone does this. The ironic thing is we rarely get to act out on this as things rarely happen as we think.
Thinking ahead of things to talk about is a good idea. That is not a prepared or memorized and well-rehearsed "ad lib line".