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: Katie wanted a new dress. Sentence2: She did not have money for one. Sentence3: She decided to buy one anyway. Sentence4: When Katie checked her checking account, she had overdrawn it. Sentence5: Katie did not know what to do.
A:
Katie