Hi @sayedhaider300 .
This action works like you have detailed and I have recreated it:
Basically, from what you have provided I expect you will need to use a condition. The condition will do the Following:
If "New Order,In Progress,Completed" - Present "For a selected item" with "Reason for Cancellation" hidden.
If Cancelled" - Present "For a selected item" with "Reason for Cancellation" on display.
So, you will have 2 of the above, one with no "Reason for Cancellation" field.
Worth a go?
Any issues, maybe you can post your full Flow so we can see the trigger etc?
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Thanks, Alan