How to find a holiday romance with no info only their hotel ?

How can I find someone I met at the hotel with no info about them, I met this girl and she kept staring and smiling at me and it was like that back and forth between us, she left sooner than expected and I missed my chance to ask for her socials, what do I do because I really want to get into contact with her! I only know the hotel she was at, her room number and when she left ?