your wish is my command
US /jʊər wɪʃ ɪz maɪ kəˈmænd/
UK /jʊər wɪʃ ɪz maɪ kəˈmænd/

1.
a phrase used to express willingness to fulfill someone's request immediately and without question
:
•
“Could you please get me a glass of water?” “Your wish is my command!”
•
Just tell me what you need, and your wish is my command.