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: Melvin loved buying things online. Sentence2: The excitement of shopping met the convenience of his home. Sentence3: Melvin started buying more and more neat thing on the web. Sentence4: He went over his monthly budget for two months straight. Sentence5: Melvin ended up blocking his favorite online shops for a while.
Melvin