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: Today I started training for a new job. Sentence2: I was a bit overwhelmed and worried going into the day. Sentence3: However, my trainer was very patient and understanding. Sentence4: He taught me well, and showed me in ways I could understand. Sentence5: By the end of the day, I had mastered most of the skills needed.
A:
I (myself), Trainer