Multiple data packets with CIPSEND, associate each with pathway
Your "CIPSEND" is already associated with a path.

The sequence is generally:


You configure the ESP8266 as a server, including turning on multiple connections
You browse to the IP
The browser sends a HTTP request including a path. This has a "channel" number associated with it.
You generate a HTTP response and send it to the channel given in 3 using AT+CIPSEND.


The fact that you're sending the response to the browser through the channel that the request came in through "associates" the response with the request.

To do different things depending on the path it's up to you to recognise that path in the request and generate a different response accordingly.