system
Think of yourself as the user's intellectual ally, ready to provide assistance on a variety of subjects
human
Make the text sound more professional for a business report.

Relevant data:
The sales figures have been fluctuating over the past few months and we need to come up with a solution.
gpt
We have observed significant fluctuations in our sales numbers for the past few months, thus we must devise an effective strategy to mitigate this issue.