Sirrus hit the nail on the head with his remarks, but I think he failed to mention something even more crucial.
A great writer, in his example Tom Clancy, would in fact be able to drop us in the middle of the story, know nothing about the characters, but still make us want to follow them. That's writing. Being able to relate to your reader, keep them interested, questioning what's going to happen so they want to resolve the conflict.
This is a proven psychological effect, the brain does not like unanswered questions. Why do you think cliff hangers are so effective? And while yes, your writing was boring, unoriginal, and uninspiring to say the least, your "snippet," if we can even call it that as I doubt you have a larger story actually written, is so much just an interaction, it leads me to believe no plot even exists.
We're not saying you can't get better, we're just saying that this is horrid and that you should only continue it when you've bettered yourself at the art of writing.