Dear Greg,

I hope you are doing well. I would like to express my gratitude to you and Vikki for your hard work in making this amazing trip happen. The trip was outstanding, and we all enjoyed the place so much that I want to visit it every possible time. Also, I would like to thank Sakis and Thania for their hard work and their dedication. The food was amazing, the hotels, and all the historical places that we visited. 

Many thanks to you and for everyone who helped me to make this amazing study trip happen.

Have a great day,