Dialogue is a great entry point into your character's attitudes and thoughts. Let's take it a step further, and think about what was going on in their head throughout this encounter.
Go back to the dialogue you created in the previous challenge, Understanding Character-Dialogue. Copy the text into your response here, and add some thoughts the two characters are having. Focus on what your character was thinking; the reactions, reasoning, emotions--anything. Put the thoughts in parentheses throughout the dialogue.