Dialogue Part 1

I recently learned a trick while writing dialogue. Have your characters be busy while they talk. (i.e. kneading dough, fixing a car, dancing)
That way, if you need  a  pause you can write more then 'she didn't answer;she was angry.' and say ' she remained silent, glowering at the dough on the counter, her hands punching it as if it was his face.'

This tip does not apply for every conversation. During the quick conversations you can add fidgets, like brushing their hair away from their eyes.