I have gotten so many questions saying WHY IS SQUALL AND RINOA'S LINES REVERSED? Well uh, Spoiler warning, but the order in which I have scripted Squall and Rinoa to speak back and forth with Squall saying he's the one waiting there, is because that's how it is in the game. Yes, Rinoa IS in the field waiting for him. But, HE is the one who promised HER that he'd be waiting there for her. He just hasn't shown up yet.
This is based on the game dialogue in which Rinoa has a nightmare and talks to Squall about it. He then promises her that he'll be waiting there for her if something is to happen. The actual dialogue is below, ripped from a GameFaqs script walkthrough thing:
Rinoa: Yeah. Can I tell you a story? I had a dream. It was a scary
dream. We make a promise. WE promise to see shooting stars together. I
get dressed up and put on your ring. But the thing is, I can't remember
where I'm supposed to meet you. I started to panic. I really want to
see you, Squall, but I don't know where to go. I start running through
the mountains, the desert, the plains... Through Timber, Balamb, and
Galbadia... When I realized I can't run any longer... I...I just want to see
you so badly... So I scream, Squall, where are you!? Then I woke up. I
was crying. I'm sorry. You don't have to say anything. I just felt like
I had to tell you.
Squall: It was just a dream... It doesn't mean anything. Don't worry
Rinoa: ...I guess you're right.
Squall: How about this... I'll be here...
Squall: The reason why you couldn't find me was because we haven't
Squall: I'll be waiting for you. If you come here, you'll find me. I
Rinoa: I'll be here, too. It's a promise! Thanks, Squall! Next time,
we'll meet for sure!
So that is why I have chosen Squall to be the one to read the opening dialogue. It is a large misconception that Rinoa is the one saying it, it does kill the mystery a bit with voices for that part, but it is supported by the actual game dialogue.
As for the extra scripted dialogue, those I added myself, as Rinoa's thoughts when -SPOILER SPOILER SPOILER SPOILER SPOILER- she's waiting for Squall at the end of the game and he hasn't shown up.