Given the task definition and input, reply with output. 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: Sally was so nervous about her first day at the new school. Sentence2: She sat down next to a girl with blonde hair. Sentence3: Her name was Lisa. Sentence4: They talked all day at school. Sentence5: Lisa made Sally's first day at the new school so much easier.
Lisa, Sally