Writing Practice

A: So, have you thought about the proposal I talked to you about the day before yesterday?
B: Yes, I have and there's something I need to tell you. I don't have a good feeling about it.
A: Why do you say that? I don't think it's going to cause any harm, do you?
B: Well, I'm not sure. I don't believe you've considered everything. I can't tell you what, but I'm sure you're missing something.
A: I have never planned anything simpler. I can't see anything that could be go wrong.
B: I'm not of the same opinion and I wouldn't bet on it.

Thanks for any feedback you can provide.