*sigh* Okay, Arydanilov, you mention 'pilot' and I start thinking seriously rather than just about the nookie... did you plan this?
Seriously, considering the niche market the plane in question would most likely be a high-end executive jet like the Learjet, Cessna Citation or Gulfstream G-IV rather than a full-size airliner. Passenger capacity for execujets tops out at about twenty, halve that to allow for a 'flight attendant' for each passenger, then you'd reduce it further to allow for more luxurious accommodations for each passenger (probably including soundproofing), so it's doubtful there'd be room for more than eight paying passengers on the flight.
With such high-paying passengers it's pretty doubtful that the pilot will be getting any during the flight. He's got to keep his mind on the job - besides, a flight attendant tending to him in mid-flight isn't tending to a passenger, and that would be poor customer service for such valued clients
On the other hand, while the flight attendants are sure to 'satisfy' the passengers there's no guarantee that the flight attendants will get off the plane satisfied - and as the plane captain it's the pilot's responsibility to see to the welfare of the crew and make sure that they're well-rested for the next flight. So that's the excuse for a layover after the flight with the pilot and however many of the flight attendants are in the mood.
Okay, after all this talking I guess I'll shift my choice from playing a passenger to the pilot, if any of the cabin attendants would be interested in a 'layover' type romp after the flight.