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: Sandra is really unhappy with her hair. Sentence2: Her friends all criticize her it looks bad. Sentence3: She decides to do something about it. Sentence4: She heads to the salon to get a haircut. Sentence5: She shows off her new hair to hair friends and impresses them.
A:
Friends, Sandra