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've changed "Lunch" for you.
The later one works best.

I didn't find any events matching "trip" on March 5, 2020 at 8:00 AM.
Cancel my trip on March 5, 2020 at 8:00am

The next event with Sarah is on Wednesday the 25th at 2:00 PM.

When is my next meeting involving Sarah?