Luke: "I think those new droids are gonna work out fine. In fact, I, uh, also thinking about our agreement, about me staying on another season. And if these new droids do work out, I wanna transmit my application to the academy this year."
Uncle Owen: "You mean, the next semester before the harvest?"
Luke: "Sure, there's more than enough droids."
Uncle Owen: "Harvost is when I need you the most. Only one season more. This year we'll make enough on the harvest that I'll be able to hire some more hands and then, you can go to the academy next year. You must understand, I need you here, Luke."
Luke: "But it's a whole 'nother year."
Uncle Owen: "Look, it's only one more season."
Luke: "Yeah, that's what you said when Biggs and Tank left."
Aunt Beru: "Where are you going?"
Luke: "Looks like I'm going nowhere. I have to go finish cleaning those droids."