(be) with you in a moment

(be) with you in a moment

Please wait patiently for a short amount of time, and I will attend to you as soon as possible. A: "Hello? Mr. Duffy?" B: "With you in a moment, Tom! Please, make yourself comfortable in the living room." A: "Excuse me, Ms. Wallace?" B: "Be with you in a moment, Jessica. I'm just finishing up an email to our supplier."
See also: moment