Season 1, Episode 9
Sam tells Dean he is having visions and that it's time to return home to Lawrence, Kansas, where they find a ghost haunting their old home.
Sam: Dean, I know where we have to go next.
Dean: Where?
Sam: Back home. Back to Kansas.
Sam: I have these nightmares.
Dean: I've noticed.
Sam: Sometimes they come true.
Dean: I mean, first you tell me you've got this shining and then you tell me I've got to go back home especially when...
Sam: When what?
Dean: When I swore to myself that I would never go back there.
Sam: I mean, how much do you remember?
Dean: About that night?
Sam: Yeah.
Dean: Not much. I remember the fire, the heat, then I carried you out the front door.
Dean: Wait, Missouri Mosley. That's a psychic?
Sam: I guess.
Missouri: People don't come here for the truth. They come here for good news.
Dean: Don't know? You're supposed to be a psychic, right?
Missouri: Boy, you see me sawing some bony, tramp in half? You think I'm a magician? I may be able to read thoughts and sense energies in a room but I can't pull facts out of thin air. Sit! Please.
Missouri: Boy, you put your feet on my coffee table and I'm going to whack you with a spoon.
Dean: I didn't do anything.
Missouri: Well, you were thinking about it.
Dean: Listen, Jenny, it's important.
Missouri (smacking Dean upside the head):Give the poor girl a break. Can't you see she's upset? Forgive this boy. He means well but he isn't the sharpest tool in the shed.
Dean: Well, one thing's for damn sure, nobody's dying in this house ever again.
Jenny: Hi, we're home. What happened?
Sam: Hi. Sorry. We'll pay for all of this.
Missouri; Don't you worry. Dean's going to clean this up this mess. Well, what are you waiting for boy? Get the mop. And don't cuss at me.
Mary Winchester: You get out of my house and let of of my son.
Missouri: John Winchester, I could just slap you. Why won't you go talk to your children?
John: I don't want to. You have no idea how much I want to see them but I can't. Not yet. Not until I know the truth.
I replayed it a few times and that's how I heard John's line. If anyone has something different, I'd be thrilled to know.