Dear {Customer},

Thank you for giving me the opportunity to tell you about {product} yesterday. I'm certain that it will meet {your/your company's} needs. Please don't hesitate to contact me at {email} or {phone} if you have any questions or comments.

Kind regards,
{Your Name}

Dear {Tour Company/Tour Guide},

Thank you for our fun and memorable trip in {name of city/country}. The tour was very well-organized, from the pacing to the selection of sights and restaurants. It's amazing how much we were able to see and experience with our limited time in the {city/country}.

We really enjoyed visiting all the spots, trying new foods, and learning about {nationality} culture. Our favorite parts were {favorite parts}. We also appreciated everyone looking after us, especially {our kids/my elderly parents}.

The entire tour was fantastic and we hope to be back one day. Thanks again for helping us have a memorable {holiday/vacation}!

Warmest regards,
The {Surname}s