How to ask for being physical to the girl at the first or second meeting.

Actually I'm going to meet a girl of age 21/22 met on okCupid in upcoming days. As I feel erotic when I see her photo and willing to get intimate with her and willing to have Fwb or open relationship type with her but she is looking for long term and won't accept my offer.

Note: I'm 26 M now.

Give real suggestions how shall I convince her for this need.