In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Q: Sentence1: I was on my way to work yesterday. Sentence2: Driving on the highway I got a flat tire. Sentence3: I had to call triple A. Sentence4: Finally they came and fixed it. Sentence5: I was then back on my way to work.
A:
I (myself), Triple a