Actual conversation after query and partial had been submitted and a full requested.
Author: So you're saying you want to see the entire manuscript with the idea of publishing it in the spring?
Publisher: Yes. I think it would be great to release it in early March so it will be available for conference sales.
Author: Oh, well, I'm not sure I can have it ready by then. I've only written the first three chapters and I just have an outline of the rest of the story. In fact, I'm rethinking the ending so it might take me a while to finish it. I'm really busy right now. Maybe I can have it to you by fall...oh, wait, I'm going to Europe this next summer so fall won't work for me...
Publisher: Never mind. I'm not really interested, after all.
Moral of the story: FINISH YOUR MANUSCRIPT BEFORE YOU SEND A QUERY!
[P.S. This type of post is just one of the reasons why I am anonymous. If you knew I was Edith Editor at XYZ Publishing, I would never be able to tell you about these types of events. But because I'm anonymous, the Author stays anonymous too and can therefore be an example to everyone of what not to do. And to further the anonymity of the Author, this conversation did not happen this week or even this month. I've been saving it so that no one would be able to figure out who the poor clueless author is.]