Office personality #3?

Two boxes of mooncake arrive today compliments from our vendors. One for each office but after lunch we found one box missing. We are feeling really odd.

So me being the kaypo (and i had a feel on who is da super fella), i contacted the usual suspect of main office. Anything missing, check with him first. My standard procedure.

TB: Hey US..pantry got mooncake
US: okie..
US: i know..thks
TB: hv u taken? nice anot?
US: the nut type is nice..
US: famous brand meh..
TB: yeah..actually one box is for eng
TB: now don noe y left one box only
US: i took 1 box to engr
TB: u did? *wow he saved us a trip, i am bad..i was paranoid*
TB: wer u put?
US: sori har..
US: i hungry..
US: here lor..
US: in the test lab.. *HAR?!?! I KNEW IT! Leopard don change spot one*
TB: u din take lunch ar? * i play along oni*
US: yup..*like real! trying to wiggle out of the situation!*
TB: how many left now
US: maybe 5-6. *its 12 in one box, dear readers)
US: when i took the box, its left with 5-8 pieces..
US: i have not eaten any.. * you juz said that the nut is nice -_-"*