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There are many people to claim to of flown but the first witnessed flight might be by a Mr. Otto Lilienthal
making the first airplane and succesfully flying it
the world's first flight over a large body of water in a heavier-than-air craft.
The are famous for invinting the first ariplane.
Some military air craft are capable of refueling in flight
Henri Coandă was the first man to build the JET ENGINED AIR CRAFT.
A number of people had built gliders; they could jump from a hill and fly down, but it wasn't "powered" flight. Orville and Wilbur Wright built the first heavier-than-air craft that could take off under its own power.
Depends if it's direct and how large the air craft is
Air craft cabin is fully pressurized.
Sally Kristen Ride
The Wright brothers' first airplane, the Wright Flyer, was not a powered, heavier-than-air craft; it was indeed a powered, heavier-than-air airplane. It was also not the first aircraft to achieve sustained flight, as the Wright Flyer successfully made its first powered flight on December 17, 1903. Additionally, it did not have a closed cockpit, as it was an open-frame design.
Military aircraft do not have flight attendants. If you are perhaps asking how to be assigned to a military chartered flight, you would need to already be a flight attendant, and check with the head office of your airline.