During your interview you should use the STAR method to tell stories. The STAR method stands for Situation, Task, Action, Result.
The STAR method
Situation: Describe the event or situation that you were in.
Task: Explain the task you had to complete
Action: Describe the specific actions you took to complete the task.
Result: Close with the result of your efforts.
You also want to ensure that you are friendly, kind, respectful, and truthful. Ask your own questions and be engaged.