Houston - A man, who fell asleep during an intended flight to California, was abandoned on the dark and empty Express Jet plane that he had been traveling on. Tom Wagner, from Louisiana, told KTRK that the United States regional airline, ExpressJet, gave him a $250 voucher (about R2 591/ @ R.../$), as well as compensation for hotel accommodation, after leaving him onboard a locked plane.Wagner who had intended to leave the Houston airport, to catch a flight to California last Friday, evidently slept through the call to exit when the plane landed. He was found hours later, by ground staff servicing the plane, raising the question of what could have happened if he had had a medical condition or heart attack while trapped on the plane, reported ABC News. Boasting a total of 9 000 hard-working aviation professionals employed by ExpressJet, not one employee bothered to sweep the plane after it landed. ExpressJet spokesperson, Samantha Harris said that flight attendants are responsible for completing a walk-through on the aircraft as part of post-flight procedures but this did not happen. ABC news reported that airline investigators are looking into the matter.