You can find lots of extra conflict in your story by considering what the characters EXPECT from each other, and what happens when those expectations are met with a very different reality.
Most people get along well when they get what they expect from each other. That’s nice for life. Not great for story.
Watch what happens in your script when one character does the complete opposite of what another expects from them. This kind of conflict is easy to set up and gives a great deal of texture and risk to the relationships between your characters.