Thank you kindly spoken
A courteous way of thanking someone for something.
A: "Here, let's me help you." B: "Thank you kindly!'
A: "I've told the boss to give you a few more days. You better not miss the deadline this time." B: "Oh, thank you kindly. I promise I will finish it in time."
You're very kind and helpful.
Thank you very much.
Used to thank someone who drives you to someplace by their car
Used to convey a great deal of thankfulness to someone for something.
A speech extending thanks to someone and at the same time asking the audience to do so.
This phrase comes in the 1921 edition of H. L. Mencken's book The American Language, indicating that "thank you kindly" was brought to America by Irish immigrants who were nearly incapable of speaking plain yes or no and had to always add some unnecessary and needless asseveration.