Dear Mike & Ms. Lan,
This is my thank-you-letter. Thank you very much indeed! All the organization of the trip was strict, nothing was delayed even with 5 minutes. The hotels were also very good for our needs and all the tourists were happy. I will think the route once more because it was a little tiresome, but I think there should pass some time to think it over.
Thank you once more! With a hope for still better future cooperation, with best regards,
Roumy Marinova