No, indeed, said Cynthia. 
( No ( , ( indeed ( , ( ( said Cynthia ) . ) ) ) ) )
(ROOT (S (INTJ (UH No)) (, ,) (ADVP (RB indeed)) (, ,) (VP (VBD said) (NP (NNP Cynthia))) (. .)))
Yes, certainly, said Cynthia.
( Yes ( , ( certainly ( , ( ( said Cynthia ) . ) ) ) ) )
(ROOT (S (INTJ (UH Yes)) (, ,) (ADVP (RB certainly)) (, ,) (VP (VBD said) (NP (NNP Cynthia))) (. .)))