Sure, one sec I just have to finish this sentence.
Can you go get me a pencil please?
No, I said a pencil.
You said you needed a pen, right?
Mr.Bennett, where are the pens?
On the cabinet beside the door.
I said a pencil!
Here is pen because I think that will work better.
I'm sorry, I was just trying to help.
It's about time!
I have your pencil.
What went wrong here is the man just wanted a pencil and he makes it clear, but the woman wants to do what she thinks is best and not what he thinks is best. The man could have listened to what she had to say before he got mad or she could have just listened to what he said.