1. A method of operating a digital assistant, comprising: at a device having one or more processors and memory: receiving a first speech input from a user; initiating a first information provision process in response to receipt of the first speech input, the first information provision process comprising preparing at least a first response and a second response to the first speech input; providing the first response to the user; after or concurrent with the provision of the first response to the user, but before provision of the second response to the user, detecting an event operable to initiate a second information provision process; initiating the second information provision process in response to detecting the event, the second information provision process comprising preparing at least a third response to the event; determining a relative urgency between the second response and the third response; and providing one of the second response and the third response to the user in an order based on the determined relative urgency.