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: I decided to go to my favorite arcade machine in the restaurant. Sentence2: I found out that a kid was already playing it. Sentence3: He couldn't stop playing for several minutes. Sentence4: However, the tickets from the machine ran out and he left. Sentence5: I had to wait an additional hour for the ticket vendor to refill them.
I (myself), Ticket vendor, Kid