1. An electronic device comprising: one or more processors; memory storing computer-readable instructions, which when executed by the one or more processors, cause the one or more processors to: receive input representing user instruction to provide a reminder in the future, the instruction identifying an entity; and after receiving the input: detect, by a microphone of the electronic device, an audio input; identify, in the detected audio input, a voice corresponding to the entity; and in response to identifying the voice, provide the reminder.