Tina: I had a strange dream last night.
Jack: Well, dreams are always strange. I've never had an absolutely "normal" dream. So what did you dream about?
Tina: I dreamed about a skyscraper devouring a small "Starbucks"
What do you call a single part of a dialogue that is spoken by one person? (There are three such parts written here: The first and the last one are spoken by Tina, and the middle one is by Jack.)