okay and and i think we just hang up i don't think we have to do anything else
( ( ( okay ( ( and and ) i ) ) ( think ( we ( just ( ( hang up ) i ) ) ) ) ) ( ( do n't ) ( think ( we ( have ( to ( do ( anything else ) ) ) ) ) ) ) )
(ROOT (S (NP (NP (NN okay) (CC and) (CC and) (NN i)) (SBAR (S (VP (VBP think) (S (NP (PRP we)) (VP (ADVP (RB just)) (VB hang) (PRT (RP up)) (NP (FW i)))))))) (VP (VBP do) (RB n't) (VP (VB think) (SBAR (S (NP (PRP we)) (VP (VBP have) (S (VP (TO to) (VP (VB do) (S (NP (NN anything)) (ADJP (RB else)))))))))))))
That's it, we just hang up, right? 
( ( That ( 's it ) ) ( , ( we ( just ( ( ( ( hang up ) , ) right ) ? ) ) ) ) )
(ROOT (S (S (NP (DT That)) (VP (VBZ 's) (NP (PRP it)))) (, ,) (NP (PRP we)) (ADVP (RB just)) (VP (VBP hang) (ADVP (RB up)) (, ,) (ADVP (RB right))) (. ?)))