“What will you be demonstrating in the booth at the customer conference?”
Well, how can you know? Who is going to walk up? What will their needs be?
And so, before demonstrating generic solutions to generic problems, engage in discussions about their business, their challenges, their needs.
Between the two of you, on a blank sheet of paper, draw circles and lines expressing a conceptual solution with the myriad players and processes involved. Then demonstrate specific solutions to their problems, hitting the points meaningful to them.
In the past you could tear off the sheet and hand it to the patron as a keepsake but these days they’ll just snap a picture with their phone and walk on.