Tell me about a time you had to fill in for someone. How did the experience make you feel? Were you successful?

Example how to answer this question: I had to fill in for a colleague at work once when they were out of the office. It was a very sudden request and I felt a little overwhelmed at first, as I had never taken on this level of responsibility before. However, I was determined to do my best and reassure the team that I was able to handle the job. After a few hours, I felt more confident and could see that my colleagues were pleased with the results. I felt proud of myself for taking on the challenge and successfully completing the task.