Dear Kazim:

We just arrived home last evening from our trip to Istanbul and London and wanted to take some time to thank you for all that you did to make our visit to Turkey enjoyable.  Your presentations gave us interesting background and your attention to details (the annoying noise in our room) were greatly appreciated.  We also enjoyed our trip to Ephesus and the guide did an outstanding job.  Best wishes to you in your life and your career as a travel professional.  We will recommend you and your company to anyone we know interested in traveling to Turkey.
Chuck and Judy G