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: Sandy wanted to visit her friend in California. Sentence2: Sandy looked at web sites for airplane tickets. Sentence3: She found a good deal on a trip the next month. Sentence4: Sandy purchased the tickets and prepared for the trip. Sentence5: Sandy and her friend had a wonderful time during her visit.
Friend, Sandy