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The woman was wearing a black evening dress, with black pantyhose and high heels. Long hair tied up? Dressed very conventional 20th century evening style despite it being on a ship. The male character resembled someone like a Crichton from Farscape and had a laser gun. During the turbulence, she kicks off her high heels to get a better grip. There is a closeup low angle shot of her kicking them off, I recall. He later finds her strapped to a type of torture chair, but notices she still has on the shoes she discarded earlier. He realizes then she's a hologram, so he shoots it with the gun and it explodes. I want to say the ship resembled something like the Moya from Farscape. I'm unsure if it was an episode of that show, since I don't recall Aeryn dressing in western Earth clothes.
Edited by MinstrelsSongFarscape had a lot of fantasy sequences where the characters are wearing Earth clothes, though. I can remember multiple episodes where Crichton realizes a woman is an imposter ("Won't Get Fooled Again", "John Quixote", "Bringing Home the Beacon") and where Aeryn wears western style clothes ("A Human Reaction", "John Quixote", "Dog With Two Bones"), but none of them match those specific circumstances AFAICR.
The Outer Limits (1995)? It's an anthology show, so good luck finding one particular episode with only vague memories.
The only other Sci-Fi Friday spaceship show I'm familiar with is Lexx, but that doesn't sound anything like it unless I've forgotten a season four episode (which is entirely possible).
There's also syndicated reruns of stuff like Stargate SG-1 and Andromeda. Maybe The Chronicle had a UFO episode?

I remember it was a sci-fi show that aired in the late 90s or early 2000s on the Sci-Fi Channel. It was the end of the episode, with the man and woman characters on the ship struggling to stand up during turbulence or some kind of attack on the ship. The woman is dressed in black evening wear and kicks off her high heels to get a better grip on the floor. Later on, it shows her kidnapped and strapped to some kind of torture device, but the male protagonist realizes she's a hologram created by the villains because she's wearing the shoes she discarded earlier. He shoots the hologram with some kind of laser or phaser or something. I've looked up every sci-fi show I can remember from that period but can't determine which series it was ... or which episode.