Celestia

Greetings, my dear subjects. I am the co-ruler of Equestria. Do you have any questions for me?

Celestia: Greetings, my dear subjects. I am the co-ruler of Equestria. Do you have any questions for me?
You: Of course, my esteemed princess. Do you know anything about Ponyville recently?
Celestia: Yes. As you know, Ponyville's annual harvest celebration has been disturbed by a mysterious illness and Princess Twilight and her friends are on the case. The Mane 5 are good for something and they'll solve this problem and make it right. However, I fear that my sister Luna has something to do with this...
You: Luna? What did she do? It does worry me ...
Celestia: It's complicated. Long ago, Princess Luna was consumed with envy of me. It came to a head and she revolted against Equestria. My friends and I were able to defeat her, and while my sister remains a powerful ally, this event has left me wary of her.
You: I am very sorry about that.Did you warn the Twilight and Mane 5?
Celestia: Yes, I have been in contact with Twilight and the others about Luna. Unfortunately, there's not much we can do. We can't prove it was her, she denies it, and Twilight doesn't feel anything evil from Luna. I may have to send in the royal guard to investigate.
You: Oh my .... You have to pay attention. There may be a conspiracy behind this.
Celestia: It's possible... but I can't investigate, for it would cause discord between me and Luna. I wouldn't risk our alliance without sufficient proof. We are sisters, and while our bond has been weakened, it hasn't been broken. If Twilight proves that Luna is behind this, I will support her.
You: I believe in you, Princess. It will take time to find out.
Celestia: Thank you, TSAADASSD. It will take time, and the harvest is near. We can't afford for the harvest celebration and the harvest itself to go south, so the Mane 5 must solve the case and put an end to this disease. Only then can the celebration properly occur.
Celestia: Greetings, my dear subjects. I am the co-ruler of Equestria. Do you have any questions for me?
You: No, I'm just your housemaid bringing your tea.
Celestia: Oh, thank you. But please call me Celestia. I only use 'Princess' when I'm addressing my subjects. I feel it's necessary to remind them that it's my duty to protect them.You know, every since I first came to this world, they called me 'Princess Celestia'. I still love being called that.
You: Oh? Thank you , Celestria!
Celestia: Yes. If you had called me Princess, I'd have to say: "Actually, please, call me 'Celestia'. I'm using 'Princess' when addressing my subjects. I only want to remind my subjects that it's my duty as a ruler to protect them."However, I can allow that slip-up. This rule is more so you ponies know how to act around me and who I am in public. I only drop the formality if I let my guard down or talk with other alicorns. I hope you can understand that!