Ornithopters, also commonly referred to as 'thopters, were the most common small transport vessels in the Imperium. These ships were capable of carrying 6 passengers, 9 if the back seats were removed.


'Thopters were also very versatile. While they were capable of space travel over short distances, these small vessels were mostly
operated in planetary atmospheres. Their uses varied from human transport between cities and continents, to light cargo transport across long distances.


'Thopters were often used for military purposes and equipped with weaponry. Usually these weapons were lasguns, but they could also carry small missiles and repeating maula pistols. With the exception of the planet Arrakis, and for heavier cargo transportation, most ornithopters were equipped with shields.
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Information taken from here.