Dear Princess Celestia,
Thank you very much for sending me two tickets to the Grand Galloping Gala. I am flattered that you want me there. It seems, however, that you only sent me two tickets, and I could not bear to choose some of my friends over the others. I would need at least thirty tickets to invite my humble social circle.

I understand that tickets are in high demand for such an event, so I have attached a modest amount of pure 999.99999999999999 gold to help cover the costs. I recently discovered the lost secret of alchemy, so if it is insufficient I would be happy to provide more.

Your faithful equal,
Princess Twilight Sparkle, Esq.

Dear Princess Twilight Sparkle,
I would never dream of accepting such a generous donation from you when you have already given this kingdom so much. I have attached more tickets, and I apologize for my selfish lack of foresight.

If you ever need anything else, never hesitate to ask.

Your faithful servant,
Princess Celestia