Complex sentence: He enters the holodeck finding his character's bubbly secretary, who calls him "Dix", and who comments on his "bell boy" outfit, which reminds Picard of the unsuitability of his 24th Century uniform for the setting.
Split into simpler sentences: He enters the holodeck finding his character's bubbly secretary, who calls him "Dix". She comments on his "bell boy" outfit, which reminds Picard of the unsuitability of his 24th Century uniform for the setting.