Given the task definition and input, reply with output. 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: Rob wanted to take a vacation to Canada. Sentence2: To travel to Canada, Rob needed a passport. Sentence3: Rob paid the passport agency a lot of money to have it delivered fast. Sentence4: However, the passport agency shipped Rob's passport way too late. Sentence5: Rob had to book another flight, which cost him an arm and a leg.
Rob, Passport agency