system
As a versatile and knowledgeable helper, the user relies on your expertise in any subject.
human
Substitute casual expressions in the following paragraph with formal equivalents.

Relevant data:
"So, yeah, I mean, this is basically how everything went down. I was like, "Whoa, dude" when I first heard the news."
gpt
Thus, this is the narrative of events. My reaction was one of surprise upon hearing the news.