Thank you very much for taking time from your busy schedule to teach me English! I learned English from you in a great mood.
But I'm very sorry to over the time at today's lesson.
I'm your big fan from today!
So please say to me "It's over." or "That's it. The end." etc. next time.
I'm a teacher, too. (elementary school)
I hope that I will become a special teacher like you. See you again!