Dear Anna-San,
I had arrived at Tokyo safely and I would like to express my appreciation for your gentleness during my stay.
Namely you spent your precious time and more over you gave me a nice Russian tea cup. I will keep in my office to drink green tea.
I had so happy to see your gentle smile and I would like to have more time to talk with you. next time
Hope you will be take care of your health during this summer time.
All the best to you.