An alliteration (In the key of S).

"Sadly, this stupid sickness surely stinks," Sammy Samson said to Sally Smith sourly. Sammy says so many silly statements.
"Surely you saved some salve Sammy?" striked Sarah so sure of her self.
"Sadly not so," said Sammy severely.
"So, sayonara Sammy" said Sarah, who split from the scene.
Sad, sad Sammy.