Tina is Sara's best friend. One day, Tina was telling the class about how her and her group fought in history class. Sara said to herself, "Sounds boring." Sara's friend Olivia heard and giggled. Tina turned around angrily, obviously hearing Sara's snide but true comment. "Did anyone ask for your opinion?" Tina said. "Did anyone ask for you to tell a story about your drama?" Sara replied cleverly. Tina scoffed and sat down.
What is the main conflict in the story?