Dear Mr.Smith,
　　My husband and I are regular customers of your restaurant over the past few years. We enjoy your food very much.
　　However,on Saturday, September 27,we had a poor experience.Ifeel it is important that you be aware of your employees' behavior.
　　We arrived at about 6:45 pm.The waitress seemed to be annoyed.She did not smile or say anything friendly.We thought maybe she was just having a bad day.However, we ordered a hamburger without cheese for our son.When the food came,there was still cheese on it.
　　We told her and her response in a rude tone was“Well, you should have reminded me!”She said,“Just take it off.”We couldn't just take it off because the cheese had already melted.We asked a new hamburger.She seemed very annoyed, but did get him a new hamburger.She also did not refill our drinks until we asked.
　　I have enclosed a copy of our bil for your reference.Please contact me at anytime about this issue at (345)333-1234.A response from you will make us more likely to return to your restaurant in the future.