Which is the more correct way to end this letter in Italian?

I am writing the Italian consulate and I want to say "Thank you so much for your time and consideration" as they evaluate my case for Italian citizenship. I want to thank them for considering the merits of my case. Which makes more sense here:

"La ringrazio per il suo tempo e la sua attenzione!"

"Grazie per il tempo che ci hai dedicato e per la tua considerazione."

Thank you!