guess who said tt?

this is a series of sms bet. me and cc (funny! *haha)

cc: some 4warded sms abt sending gd wishes by the wind...
me: it's so hot, there's no wind! how?
cc: ...pls dun be lame..
me: i cant help it what..i'm really lame!
cc: ok fine you want walking stick, walker or wheelchair? i bring for you on wed
me: i think wheelchair is the best..thanks! what a nice friend i hv!
cc: u r hopeless! tomorrow still got marketing paper right? sleep early.. Ganbate!
me: yeah haha..thanks! i still got hope, if not tmw cmi..nights!
cc: G-nite! Dun worry, be happy!
me: 'carissa ah, cannot be to happy..' guess who said tt?
cc: huh? u online? huh? kr?
me: no to both..haha, happy guessing, i'll tell you on wed..
cc: guy or gal...monk? edwin? cannot be jx...sm!
me: all wrong! haha..it's a girl..
cc: i dunno..aj de? u dun say i will forget to ask u again..
me: lalalaa, dun worry, i'll remind u! yah, from aj..
cc: couldn't be fion de mah...i dunno...forget it..
me: dun worry abt it, i'll let u know on wed..haha..