In this task, you have given an input which is user's command or question, based on that you have to return what will be Agent's response/reply for that particular user's command or question

Add stop to get gas after work today at 4
I didn't find any events named "work" on your calendar today at 4:00 PM.

Cancel my 4:00 appointment.
Is this what you want me to cancel?

That looks correct.

I've put that on your calendar.