This is a challenging task. Efficient large scale storage and retrieval of texts is in itself a research challenge. The fact that what is wanted is, ideally, instant results, with minimal attention to the search task by a user who is wanting to concentrate on the interaction itself, makes the task even more significant. It seems feasible that using models of conversational interaction as structures to hold the stored text is a sensible way to proceed. The fact that our knowledge of conversational structuring is incomplete does not mean that there are no helpful possibilities, and a number of prototypes have been developed based on models of conversational interaction.
Conversation can be infinitely variable.
However, set against this dynamic aspect to conversational encounters, which relates to the unpredictability of everyday life in general, there is also a static aspect to interactions. That is, there are features of our personality and social position which we portray to others by providing them with a relatively static picture. One way we accomplish this is by the way in which we handle social etiquette routines. These routines are usually well-structured, commonly understood, and are performed in more or less the same manner by all of us. They are particularly in evidence in opening and closing sequences in a conversation.