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: Carla's girls were supposed to take piano lessons on Tuesday mornings. Sentence2: However, her husband decided to take the family out of town this week. Sentence3: Carla was excited to do something different for a change. Sentence4: The family went to Albuquerque to visit their relatives. Sentence5: No one missed piano lessons except the teacher they forgot to call.
Carla, Carla's girls, Husband, Teacher