What would you do if you failed to meet a deadline?

The enquirer asked this amazon behavioral interview question to understand how and why you have failed. While answering don’t blame others entirely on others instead take responsibility for the failure.

“In my current project, I am working under a direct and a dotted line manager. There is some interruption in my project due to a critical firefighting request by my dotted line manager. Although my other manager approved me to work on this task, work got delayed. In the end, I was able to solve that firefighting issue, but the timeline exceeds by one week. I talked with both my managers to take a buffer time for any future projects.”