We have provided an invoice to facilitate your gift.
( We ( ( have ( provided ( an ( invoice ( to ( facilitate ( your gift ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP have) (VP (VBN provided) (NP (DT an) (NN invoice) (S (VP (TO to) (VP (VB facilitate) (NP (PRP$ your) (NN gift)))))))) (. .)))
There's no invoice available for your gift. 
( There ( ( ( 's ( no ( invoice available ) ) ) ( for ( your gift ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ 's) (ADJP (DT no) (JJ invoice) (JJ available)) (PP (IN for) (NP (PRP$ your) (NN gift)))) (. .)))