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

Q: Dentist appointment should be from 3 to 5 pm on the 27th.

A: Is this the change you want to make?
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Q: Yes, can you add Cher Roydon to it?

A: How's this?
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Q: Yes. Copy the event forThursday too.

A:
I've changed "workout" to be at 4:00. Sorry, I can't handle that yet.
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