A/V-(으)ㄴ/는데요

...and?, ...but?

Explanation
  1. -(으)ㄴ/는데요 is also used to express the expectation of, or waiting for, a response from the other person and corresponds to '...and?' or '...but?' in English.
Details

Kimchi Reader

It can be used to express the expectation for a response from the listener.

Details

Expressing disagreement

Usually expressed in an answer (think of this example as 2 person dialog):

오늘 날씨가 안 추워요. 저는 추운데요.
The weather isn't cold today. But I'm cold.
여자 친구가 정말 예븐데요!
Your girlfriend is really pretty!
한국말을 아주 잘하시는데요.
You speak Korean very well.