Lying to girlfriend that he's working

Funny taiwan commercial video.
It's a advertisement for a notebook.

The conversation in the video.
Boyfriend: Can you hear me? Convenient to talk?

Girlfriend: Yes.Yes.

Boyfriend: Alright.

Girlfriend: Hey,Baby.Today your office is so empty?

Boyfriend: Yes. Everyone went out for their meal and I have to write report.

Girlfriend: It's been hard on you.

Boyfriend: Yes.

Girlfriend: So do you miss me?

Boyfriend: Yes,i do.

Boyfriend: Woah...Cockroach!

Girlfriend: Eh? How could you lie to me?You are playing mahjong at home!