Whatever you say !!!

KatoHow about having dinner together after work?
MoriFine.
KatoShould we have Japanese or American food ?
MoriWhatever you say !
KatoThere is a good steak house around the corner.
MoriThat's a good idea.
Explanation :
You say whatever you say to indicate that you accept what someone has said, even though you do not really them or do not think it is a good idea.
Example :
We'll go in your car, Billy. --- ' Whatever you say '.