You don’t have to
This person is really pushing their agenda on someone else, can’t some people just take a hint? We have no problem with this guy attempting to make this girl smile and laugh, but she clearly does not want his company. Just move on man before she calls the police on you.
After she tells him that he really does not have to do anything for about the third time you would think that the message would be clear. Guys, if you see responses like that it is not a good sign and you should abort the mission before it is too late.