Dear Mr. Plumber,
Thank you very much for coming to our house today. I know how busy you must be. You see, when the floor near our dishwasher became warped, and our sink wouldn't drain properly, I knew I needed your help.
The $59 I spent to have you drive over here and ring my doorbell was money well spent. I mean, when I think of the gas prices these days, it was well worth it. After that, I was only too happy to hear what you had to say and pay you 39 more dollars for your expert diagnosis.
I was amazed that you determined the problem in 30 seconds flat. You didn't even have to take one pipe apart. How talented you are! You sure are an expert in your field.
I was disappointed that I wasn't able to give you more of my money after you told me you couldn't fix dishwashers. What a shame. I was hoping to help you put your kids through college.