Quest Whispering

[Kingmen30264]

I am working on my first quest and would like to know the command to make the text that the NPC says come up in a "whisper/tell" format to where only you can see it.

For example, on some servers that I play on, when I talk to an NPC it will say something like:

"NPC Name whispers to you, 'Text' "

How do I have the NPC text that you have to say back a link?

For example, if I were to hail the NPC and it said something like:

Greetings, would you like to [know] more?

How do I make [know] a link.

And how do I link an item should I want to link something like: Rusty Dagger?

Sorry in advance for all the noob questions. Any and all help is appreciated. Thank you.