Detailed Instructions: 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.
Q: Sentence1: Alana lost her car keys. Sentence2: She checked everywhere, but couldn't find them. Sentence3: Then she saw that she had locked them inside her car! Sentence4: Alana had to call roadside services to come unlock her doors. Sentence5: She vowed to be more careful with her keys in the future!
A:
Roadside services, Alana