Speaking as a Dad, If I had a daughter it would depend on her age.
Also if she really didn't want to date the guy and did not want to be rude, and if my Daughter told me to tell him no, then of course that answer would be no.
If she was of age and he asked me, I would ask him, does she even like you? Lemme talk with her first, then if she said say yes, I would say yes.
If she was to young to date, I would say, not only no, but certainly not!
How young is too young to date, ohhhh I think she could wait till she was in her late 30's lol (kidding).