You can make dialogue stronger.
Dialogue should move the story forward, reveal character and underscore the theme.
People don't necessarily say what they mean.
Dialogue isn't 100% the same as human speech.
Find the core of the conflict.
Differences in the perception of power.
More power says less--who has the power in the conversation?
Play with power in the dialogue.
When two people are speaking, there should be a back-and-forth rhythm.
Characters shouldn't address one another by name.
And I'll add something about dialogue tags: Though said and asked are better than any fancy attributes--better still have the character do something,make an action the dialogue tags. No one sits perfectly still while talking.
During a conversation, people seldom give a long speech--if they try the other person will interrupt them.
Don't have one character tell another what that person already knows.