A method, comprising: at a first electronic device with one or more microphones, a speaker, one or more processors, and memory storing one or more programs for execution by the one or more processors, the first electronic device being a member of a local group of connected electronic devices communicatively coupled to a common network service: receiving a first voice command including a request for a first operation; determining a first target device for the first operation from among the local group of connected electronic devices; establishing a focus session with respect to the first target device; causing the first operation to be performed by the first target device via operation of the common network service; receiving a second voice command including a request for a second operation; determining that the second voice command does not include an explicit designation of a second target device; determining that the second operation can be performed by the first target device; determining whether the second voice command satisfies one or more focus session maintenance criteria by determining whether the second voice command is received by the first electronic device within a first predefined time interval with respect to receiving the first voice command or within a second predefined time interval with respect to receiving the first voice command, the second predefined time interval succeeding the first predefined time interval; in accordance with a determination that the second voice command is received within the second predefined time interval, outputting a request to confirm the first target device as a target device for the second voice command, and in accordance with a positive confirmation of the first target device in response to request to confirm, selecting the first target device as a target device for the second voice command; and in accordance with a determination that the second voice command satisfies the one or more focus session maintenance criteria, causing the second operation to be performed by the first target device via operation of the common network service. receiving a first voice command including a request for a first operation; determining a first target device for the first operation from among the local group of connected electronic devices; establishing a focus session with respect to the first target device; causing the first operation to be performed by the first target device via operation of the common network service; receiving a second voice command including a request for a second operation; determining that the second voice command does not include an explicit designation of a second target device; determining that the second operation can be performed by the first target device; determining whether the second voice command satisfies one or more focus session maintenance criteria by determining whether the second voice command is received by the first electronic device within a first predefined time interval with respect to receiving the first voice command or within a second predefined time interval with respect to receiving the first voice command, the second predefined time interval succeeding the first predefined time interval; in accordance with a determination that the second voice command is received within the second predefined time interval, outputting a request to confirm the first target device as a target device for the second voice command, and in accordance with a positive confirmation of the first target device in response to request to confirm, selecting the first target device as a target device for the second voice command; and in accordance with a determination that the second voice command satisfies the one or more focus session maintenance criteria, causing the second operation to be performed by the first target device via operation of the common network service.