How should I go about buying a furniture set from this random person?

My boyfriend and I were checking out some furniture sets on Craigslist. We’ll be renting the Uhaul the day before we move (June 28), and we were thinking of meeting up with someone from Craigslist to buy some cute furniture. We found a set we are really interested in, and we contacted the girl and said we’d be able to pick it up on June 27. In order to hold it for that long, she wants a deposit. Isn’t there something like “escrow” used for these purposes? Should I put the deposit in an escrow account where it’s dependent on her giving us the furniture on that date or something? I’m not sure what I’m supposed to do, and I’m not sure how I’m supposed to handle this situation without coming off as “I don’t trust you” or something. ?