Who is raising an event?

Hi all. I have many Alexas at home. Now, I have to say things like “switch on the light of the dinning room”, “switch on the light of my daughter’s room”,…

I would like to create a routine called “Switch on the light” that calls a script and detect (from inside the script) which alexa launched it. So I’m able with only one voice command to switch on and off the light depending on where I am.

I cannot find a way to see which device raised an event or a script.

Do you know if there is something that can give me the name of the Alexa’s device ?

Thanks a lot in advance.

Jesús.