Insert sentences randomly into questions

Hello, 
I carry out a study in which I present a discussion of 8 people. 
Each person says one sentence.
I would like to keep the order of the sentences constant but randomize the people presented. 

For example: 
1. I am Math.
2. My name is John.
... 
8. 
(It's not just words but 8 small sentences) 

"Hello [insert one of the 8 people here] blah-blah-blah-blah."
"Hi [insert one of 8 people here] blah-blah-blah-blah."
... 
Each of the eight person must be introduced only once. 

Thank you for your help, it is very helpful.

Have a nice day !