  Conversational search presents opportunities to support users in their search
activities to improve the effectiveness and efficiency of search while reducing
their cognitive load. Limitations of the potential competency of conversational
agents restrict the situations for which conversational search agents can
replace human intermediaries. It is thus more interesting, initially at least,
to investigate opportunities for conversational interaction to support less
complex information retrieval tasks, such as typical web search, which do not
require human-level intelligence in the conversational agent. In order to move
towards the development of a system to enable conversational search of this
type, we need to understand their required capabilities. To progress our
understanding of these, we report a study examining the behaviour of users when
using a standard web search engine, designed to enable us to identify
opportunities to support their search activities using a conversational agent.
