Here’s a small translation for the clip:
(still waiting for redmangolover unnie to pass to me the full translation (:)

HJK: Hello
Sunmi: Hello
[…]
Sunmi: Yes, Hello. I’m Ahn Bang-ool-ee’s boyfriend.
HJK: huh?
Sunmi: Bang-ool-ee’s boyfriend
HJK: Your Paul’s boyfriend?
Sunmi: It’s Bang-ool-ee
HJK: Bang-ool-ee?
Sunmi: Yes.. keke
HJK: Boyfriend of Bang-ool-ee?
Sunmi: Yes
HJK: that’s weird…
HJK: So why are you bang-ool-ee’s boyfriend?
Sunmi: urmm…because bang-ool-ee belongs to me
HJK: oh so bang-ool-ee belongs to you?
Sunmi: Yes
HJK: keke
[…]
Yoobin: hello~ I’m Snow white
HJK: yea…One is a snow white, one is bang-ool-ee’s boyfriend
Yoobin: yes~yes~
[…]
HJK: In your members, who is the member that keeps trying to act cute
Sunmi: Snow white
(Background: noooo~)
HJK: wow
(Background: what should i do~ hehhehheh)
HJK: Can you show us abit of your aegyo?
Yoobin: Helllo (In high pitch LOL!)
Sunmi: Omo!
(Background: hahahahaha~)

[Translation: sunmijjang.wordpress.com]