Q: 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.
Sentence1: Warren usually loves wearing a casual shirt and jeans. Sentence2: However, today he has an important job interview. Sentence3: Warren decides to dress in a suit for the interview. Sentence4: It takes him a long time to get his necktie knotted. Sentence5: When he is dressed, he feels great in his formal business suit.
A:
Warren