The interviewer is looking for your organizational skills and the functions you handle to determine if you can address their problems. Before the interview review what you do daily weekly and monthly. Being energetic planned able to set goals and willing to be flexible are all important aspects of successfully managing your new responsibilities. Extensive discussion about putting out fires may signal a problem with your ability to plan or anticipate problems.
The interviewer wants to know whether you are a responsible person or not .You have to impress him by narrating your day in such away that he gets aglimpse of your responsibility, efficiency, hard workingnature, & above all you are wputting all efforts to reach your goal