A system to provide identifier dependent operation processing of packet based data communication between a client computing device and a service provider device, the system comprising: a content selector component executed by a data processing system to select a content item, related to an action, via a real-time content selection process; an audio signal generator component executed by the data processing system to generate an output audio signal including the content item; an interface executed by the data processing system to transmit data packets comprising the output audio signal to the client computing device; a natural language processor component executed by the data processing system to receive data packets comprising an input audio signal detected by a sensor of the client computing device, and to parse the input audio signal to identify a request or a trigger keyword indicating an intent or action to be taken relating to the content item; a link generation component executed by the data processing system to: determine an absence of a device identifier of the client computing device in a database storing account identifiers established for a service provider device corresponding to the content item; generate a virtual identifier for the client computing device and link the virtual identifier to the device identifier; and send data packets that carry, in a payload section, the virtual identifier to the service provider device to cause the service provider device to establish an account for the client computing device based on the virtual identifier; and the data processing system to receive, from the service provider device, an indication that the service provider device established the account using the virtual identifier, and performed an operation with the client computing device. a content selector component executed by a data processing system to select a content item, related to an action, via a real-time content selection process; an audio signal generator component executed by the data processing system to generate an output audio signal including the content item; an interface executed by the data processing system to transmit data packets comprising the output audio signal to the client computing device; a natural language processor component executed by the data processing system to receive data packets comprising an input audio signal detected by a sensor of the client computing device, and to parse the input audio signal to identify a request or a trigger keyword indicating an intent or action to be taken relating to the content item; a link generation component executed by the data processing system to: determine an absence of a device identifier of the client computing device in a database storing account identifiers established for a service provider device corresponding to the content item; generate a virtual identifier for the client computing device and link the virtual identifier to the device identifier; and send data packets that carry, in a payload section, the virtual identifier to the service provider device to cause the service provider device to establish an account for the client computing device based on the virtual identifier; and determine an absence of a device identifier of the client computing device in a database storing account identifiers established for a service provider device corresponding to the content item; generate a virtual identifier for the client computing device and link the virtual identifier to the device identifier; and send data packets that carry, in a payload section, the virtual identifier to the service provider device to cause the service provider device to establish an account for the client computing device based on the virtual identifier; and the data processing system to receive, from the service provider device, an indication that the service provider device established the account using the virtual identifier, and performed an operation with the client computing device.