First of all, if you call for an appointment they won't tell you to call back a month later so you can then make one.
1	First	first	ADV	RB	NumType=Ord	14	advmod	14:advmod	_
2	of	of	ADP	IN	_	3	case	3:case	_
3	all	all	DET	DT	_	1	obl	1:obl:of	SpaceAfter=No
4	,	,	PUNCT	,	_	14	punct	14:punct	_
5	if	if	SCONJ	IN	_	7	mark	7:mark	_
6	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	7	nsubj	7:nsubj	_
7	call	call	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	14	advcl	14:advcl:if	_
8	for	for	ADP	IN	_	10	case	10:case	_
9	an	a	DET	DT	Definite=Ind|PronType=Art	10	det	10:det	_
10	appointment	appointment	NOUN	NN	Number=Sing	7	obl	7:obl:for	_
11	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	14	nsubj	14:nsubj|17:nsubj:xsubj	_
12-13	won't	_	_	_	_	_	_	_	_
12	wo	will	AUX	MD	VerbForm=Fin	14	aux	14:aux	_
13	n't	not	PART	RB	_	14	advmod	14:advmod	_
14	tell	tell	VERB	VB	VerbForm=Inf	0	root	0:root	_
15	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	14	iobj	14:iobj	_
16	to	to	PART	TO	_	17	mark	17:mark	_
17	call	call	VERB	VB	VerbForm=Inf	14	xcomp	14:xcomp	_
18	back	back	ADV	RB	_	17	advmod	17:advmod	_
19	a	a	DET	DT	Definite=Ind|PronType=Art	20	det	20:det	_
20	month	month	NOUN	NN	Number=Sing	21	obl:npmod	21:obl:npmod	_
21	later	late	ADV	RBR	Degree=Cmp	17	advmod	17:advmod	_
22	so	so	SCONJ	IN	_	26	mark	26:mark	_
23	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	26	nsubj	26:nsubj	_
24	can	can	AUX	MD	VerbForm=Fin	26	aux	26:aux	_
25	then	then	ADV	RB	PronType=Dem	26	advmod	26:advmod	_
26	make	make	VERB	VB	VerbForm=Inf	17	advcl	17:advcl:so	_
27	one	one	NUM	CD	NumForm=Word|NumType=Card	26	obj	26:obj	SpaceAfter=No
28	.	.	PUNCT	.	_	14	punct	14:punct	_
