Depositing a letter at Orly airport to be picked up by someone else

I have a problem with an important document that needs to pass from one person to another.

Person A bringing the document transits Orly on Saturday evening (going through the public spaces, with several hours of slack time, enough to go to some airport hotel but not enough to get into some random place in Paris).

Person B gets to Orly on Sunday afternoon (and would like to just leave by plane as soon as possible, but that plane is not booked yet, and he's not leaving without the document, because it's his passport!).

There is no luggage deposit at Orly (and I suspect most deposit services would only return things to the person that effected the deposit, or would have some physical token that would present the same problem).

There would be no problem having the document inspected, it's just a passport.

None of the persons have access to any prestige Air France frequent flyer services (both are traveling low-cost and regretting it).

The possibilities I see right now are:

• Deposit with a Person C I know in Paris, who would need to meet up with Person A on a Saturday evening, and again with person B on Sunday evening, with transport costs I estimate at some 150 euros in addition to all the hours of bother inflicted on just a friend.

• Find a hotel close to Orly that Person B can reserve a room at, where Person A would deposit the document and Person B would get it (and maybe not even sleep in the room if he can get a plane later in the evening). It would probably have to be an upscale hotel though.

• Deposit at a lost-and-found and hope that Person B can get it out . . . no, just joking, any of the two previous solutions are better!

Is there any other way?