sip si gan

I wanna find V to have quick dinner with me one day after work. So I texted her:

"are u free to have drink/quick din with me tonite?"

And she replied:

"Ok, wahaha, bb i know u feel unhappy wahaha!"

But after a 6-min break she finally realized and texted me again:

"Yiu! u find me to 'sip si gan' bye!"