`...a euphonium. A what? Euphonium, E-U-P- - Oh, I thought you said ``You're phoning them!'' ' `Are you really sure you want to quit? Click' Dialogue is the interaction of at least one speaker and hearer in a communicative verbal interaction, generally spoken. But of course an exchange of letters, interactions at a computer keyboard, including Internet chat groups, and many other kinds of interaction are often described - often somewhat metaphorically - as dialogues.
