I used to give each girl a second date no matter how the first one went so that they shouldn’t think I said no because of their looks. Although if it was going really bad I’d probably do something to get her to say no.
In one particular case, when the shadchan was a relative, I told her that it’s a definite no but I wanted to go out again in order not to hurt her feelings. Luckily the girl said the same thing and there was no second date.