Definition: 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.
Input: Sentence1: Rod had admired a cashier at work, Dotty, for several months. Sentence2: He finally got the courage to ask her out to dinner and a movie. Sentence3: Determined to make the night memorable, he purchased pricy flowers. Sentence4: But when he presented them to her, she immediately sneezed. Sentence5: Dotty was severely allergic to pollen, and sniffled the whole date.
Output:
Rod, Dotty