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: Randall wanted to go for a drive. Sentence2: He drove for a few miles outside of town. Sentence3: All of a sudden there was a loud bang when the tire popped. Sentence4: Randall worked for 20 minutes to change the tire. Sentence5: Soon, he was back on the road happily driving again.
Randall