respondent_id	age	gender	satisfaction	score	comments
101	28	Male	5	92	Great service
102	35	Female	4	85	NA
103	42	Male	NA	78	MISSING
104	29	Female	5	95	Excellent experience
105	51	Male	3	70	MISSING
106	33	Female	NA	NA	NA
107	45	Male	4	88	Good but slow
108	39	Female	2	MISSING	Needs improvement
109	26	Male	5	97	Perfect
110	48	Female	MISSING	75	MISSING