17. The system of claim 15 , wherein the acts further comprise: analyzing content output history describing content that has been output to the user during the previous conversation with the user; wherein the identifying the second virtual assistant is based at least in part on the analysis of the content output history.
15. A system comprising: one or more processors; and memory communicatively coupled to the one or more processors and storing executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising: analyzing a previous conversation with a first virtual assistant to identify a topic that has been discussed in the previous conversation more than a predetermined number of times; identifying a second virtual assistant that is not currently associated with an account of a user and that is configured to perform one or more tasks that are relevant to the topic that has been discussed in the previous conversation more than the predetermined number of times; providing, to a device associated with the user, a suggestion to add the second virtual assistant to a group of virtual assistants that are associated with the account of the user, the group of virtual assistants being configured with different personas; receiving user input indicating a selection of the second virtual assistant to be added to the group of virtual assistants; and based at least in part on the user input, associating the second virtual assistant with the account of the user.