system
Abide by your designation. Offer expert assistance to the user.
human
Replace repetitive phrases with varied language to keep text engaging.

The book was captivating, and the story took several interesting turns. The characters were well-written, and the writing style was immersive, which made it difficult to stop reading.
gpt
The captivating book's story took several unexpected turns. The well-crafted characters and immersive writing style made it impossible to put down.