This first chapter is definitely too short - it's just one hundred words but there's no clearly defined beginning, middle or end to this chapter. There's only two paragraphs too when clearly there should be more than three to justify a beginning, a middle and an end.
The conversations need to be spaced out and not all written together - a new line for each character that is speaking would be a good start.
What I'd like to see out of this fiction would be longer chapters and some kind of plot. If you are looking for inspiration or how to write a chapter then there are plenty of great writers on this forum - both past and present - where you can get some inspiration from.
"The best form of writing fan fictions are to read fan fictions!" - QA
There's also a Writers Etiquette thread with tutorials and tips on writing.