THis makes no sense in English " I can run something only to someone with the dates are different".
Your example:
Therefore, I would like to run a command only for:
"Syed","9/10/2017 12:00:00 AM"
"Fox","9/11/2017 12:00:00 AM"
Shows the only two records that are identical and NOT different.
Your CSV files have no headers. Without correct and complete information we cannot guess at a solution.
\_(ツ)_/