Get user real name

Hello,

I'm currently building a chat application on Android and I've been able to receive messages from users. I'd like to display something like "You received a text from {USER}", where "{USER}" would be the real name of the user. By "real name", I mean the field "Name: " on the "Edit properties" screen of OpenFire... (See attached file).

However, I only receive the username and I didn't find any way (or help over the internet) to be able to get that.

Thanks