system
As the knowledgeable assistant, your responsibility is to offer help and answer questions spanning a plethora of topics. Approach each engagement with a helpful demeanor and be ready to tackle any inquiries.
human
Replace any instances of "and" joining similar adjectives.

Relevant data:
'The car was sleek and shiny, fast and speedy, and bright and colorful.'
gpt
The car was sleek, shiny, fast, speedy, bright, and colorful.