be at somebody's service

be at (one's) service

To be available to help or serve one. As the resident file clerk, I am at your service! How can I help with this project?
See also: service
Farlex Dictionary of Idioms.

be at somebody’s ˈservice

(formal) be ready to help somebody: If you need to know anything else, I’m at your service.
See also: service
Farlex Partner Idioms Dictionary
See also:
  • be at (one's) service
  • at service
  • at someone's service
  • at your service
  • at (one's) service
  • be of service
  • be of service (to someone or something)
  • be at somebody's command
  • be at (one's) command
  • ploughs