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: Misty loved to sing. Sentence2: She also liked Billy. Sentence3: She wrote a song about Billy. Sentence4: Now Misty and Billy date. Sentence5: They are even going to have a child soon!
Misty, Billy