8. The method according to claim 1 further comprising: upon determining that the user-input data is indicative of the refinement request by the user, filtering a list of data items based on the generic semantic representation; and returning an indication of the result of filtering the list of the data items in the multi-facet output data.
8. The method according to claim 1 further comprising: upon determining that the user-input data is indicative of the refinement request by the user, filtering a list of data items based on the generic semantic representation; and returning an indication of the result of filtering the list of the data items in the multi-facet output data. 9. The method according to claim 8 , wherein the list of data items represents search results received from a backend system and said filtering is further based on at least one of the maintained state of the dialogue, general knowledge data representing one or more concepts, and data representing the history of the dialogue.