In this task, you have given an input which is agent's reply, based on that you have to identify what will be users' command for that reply. The user generally asks a question related to event scheduling or information of the scheduled events. Agent reply based on the available information or do the task as per user command.

I didn't find any events matching "family dinner".
I can do the family dinner at change in April 20, sat 5.00 PM to 5.30 PM

I didn't find any events on Tuesday after 3:00 PM.
What do I have scheduled after the appointment?

I've deleted your next event.

yes