Much obliged.
Rur. Thankful and owing a debt of gratitude. A: Sit down, Elmer, and have a drink on me. B: Much obliged.
oblige someone by something
to accommodate someone by doing something. Please oblige me by closing the window. Would you oblige me by accompanying me to the dance?
oblige someone to do something
to require someone to do something. You are obliged to arrive on time and enter by the side door. The lateness of the hour obliged Tony to enter by the back door.
oblige someone with something
to accommodate someone with something. He obliged her with a willing attitude. Please oblige me with a big piece of cake.