Additionally, simply drop the sir/madam to achieve the same effect as in English. The above dialog only addresses greeting one person because some words change into multiple others e.g. "Wasuzotya" is the combination of a singular prefix (Wa - you), word (sula - sleep), and singular postfix (otya - How did) spoken as one with a plural form that subsequently becomes "Mwasuze mutya" which is composed of two distinct words emerging from two different plural prefixes, a word, and the plural form of the postfix. It is sometimes impossible to not separate the plural form.