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. © 2015 Farlex, Inc, all rights reserved.

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 © Farlex 2017
See also: