Detailed Instructions: 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.
Problem:Sentence1: Cathy works in a Starbucks. Sentence2: Last week, she had an unruly customer. Sentence3: The customer kept demanding a drink that didn't exist. Sentence4: Eventually, Cathy just gave her a latte. Sentence5: The customer did not know the difference.
Solution:
Cathy, Unruly customer