So I was watching 女が階段を上る時 by Mikio Naruse late at night, and heard something that sounded familiar. Alas, I fell asleep and returned the movie before checking (yes there is still a rental store in my hood).
Anyway, in the movie a hostess from a rival club walks into a bar, and receives the 『いらっしゃい！』greeting. However, I remember hearing her respond to the greeting with another set phrase that sounded familiar yet was one I haven't learned. Does anyone know if there is set response to 『いらっしゃい！』? I think I might have heard it in another old movie before, but not irl.
Edit; the character say ごくろうさん, but this is not a phrase with a specific relation to 『いらっしゃい！』. Thanks, all!