Examples:

• What is a flight of fancy of knowledge?
• – I voted against the joint resolution on the planned egg trade, which is little more than a flight of fancy.
• Are you ready to call an end to this little flight of fancy?
• Are you ready to call an end to this little flight of fancy?
• A flight of fancy, sir.
• I'm sorry to hear you say that, sir, because it was not a flight of fancy.
• Your flight of fancy may be tickled with the touches of whimsy all the way through.
• To you this may have been a flight of fancy but Maggie has to live with the consequences.
• There were those who described the arguments of Commissioner Fischler at the Cork Conference as a flight of fancy, an utopian view of the future.
• It has a record of assisting peace and prosperity among European nations and beyond, when history seemed to insist that such a goal amounted to little more than a flight of fancy.