 Why did the guard tell Retief that the schedule for Jorgensen's World was filled up?
"It is rather unusual," Magnan said, "to assign an officer of your rank to courier duty, but this is an unusual mission." They're called Jorgensen's Worlds, and in themselves are of no importance whatever. Since they've met no opposition so far in their infiltration of Terrestrial space, they intend to seize Jorgensen's Worlds by force." Magnan leaned back, waiting for Retief's reaction. "All right, Mr. Councillor," Retief said. "If it's trapped for destruction, I suppose—" "I've heard of these Jorgensen's Worlds," Retief said. Overall policy calls for a defense of these backwater worlds. Otherwise the Corps would allow history to follow its natural course, as always." Retief opened the envelope Magnan handed him and looked at the tickets inside. "You'd better be getting started," Magnan said, shuffling papers. II Retief put down the heavy travel-battered suitcase and leaned on the counter, studying the schedules chalked on the board under the legend "ALDO CERISE—INTERPLANETARY." "Two twenty-eight, due out today for the Jorgensen group," Retief said. "Filled up. VIP's required accommodation," he said. "But—" Retief picked up his suitcase and walked away toward the glare sign reading To Gates 16-30 . Retief followed the signs, threaded his way through crowds, found a covered ramp with the number 228 posted over it.
 The VIP accommodation requested no tourists
 The gates were closing and he didn't want to take the time for the boarding session  The VIP accommodation requested no tourists  He was lazy and didn't want to do his job.  There were too many tourists on board already and the ship was full