در خدمت باشیم

Question

موقع خداحافظی اصطلاحی به کار میره به این قرار:

در خدمت باشیم!

Answer 1

I'm glad to be of service to you.

I'm at your service. (though, I think it is used more as a kind of greeting than a farewell!)

http://idioms.thefreedictionary.com/service