I answered the tech support phone.

Niklas: Tech support, Niklas speaking. How may I help you? User: Hey there! I'd like to have Application X installed. Can you do that for me? N: I'm sorry, but Application X isn't known to us and is not included in our service catalogue. You will have to apply for it, to start with, according to policy. U: Oh, but I have to have it installed today.

A rushed installation date is almost never written in stone.

N: I understand. What is the software for? U: Eh, I don't know.

At this moment, I feared a Monty Python And The Holy Grail-type of conversation, sans sane-ish answers.

N: How do you intend to use the software? U: Actually... I don't know. N: This may sound awkward, but I have to ask you: why are you requesting to have it installed? U: Because Person X told me to. N: Do you have any more information about the software, access to the installation media for this software, or knowledge of where it can be attained? U: Um, no. N: Please ask Person X to request the software with details as to why it should be installed, as we cannot help you today; at the moment, it's impossible to install the software, as it's not a part of our existing service catalogue. Also, we can't tell what it's for, from where it can be attained nor why you should have it installed.

Punchline time:

U: So... You won't install it now for me, will ya?

If I could have sent the user the above picture as an answer, I would have.