what does this mean on twitter?

[sabrina]

what does it mean when you view someones twitter and it says:

rt@sallly66: @ben22 how are you?

when its been twitter account?

sorry im new to twitter
*when its bens twitter account?

and who wrote it sally or ben?

[Jmoney]

rt@sallly66 is saying how are you to @ben22

[ouizebabe]

rt : is retweeting so your followers can see. @ is what you use to include a person.

So if i put @ouizebabe (hint hint) Then id get the tweet directed at me (by checking in interactions?) while there followers can see.

[Lauren]

Its like when you post on sum ones wall on facebook but u put @babycartwright
Then your message if you want u can follow me mines @babycartwright