What is the conversation between two people in a book?

In a book, a conversation between two characters often serves to reveal their personalities, motivations, and conflicts. For example, one character might express doubt about a decision, while the other offers reassurance and a different perspective, highlighting their contrasting views. Through dialogue, the author can also build tension or deepen relationships, making the characters' interactions pivotal to the story's development. Ultimately, these exchanges add depth and drive the narrative forward.