KA and TB (on themselves)

KA: good morning!
TB: very good morning!
KA: have written 12 books in all, me!
TB: I have lost count...
KA: you are wild, aren't you?
TB: That's what they say, as absurd as you...
KA: cough cough
TB: sigh sigh
KA: well, you do not sigh 'sigh sigh' you know?
TB: you do not cough 'cough cough' either...
KA: well, old age is catching up, I see...
TB: a bad cold would have sounded nice!