I work at front desk at a hotel, and there was a girl who was clearly eyeing me. She was staying for work for 4 days, she is from the other side of the country. She came up to talk to me all the time and she showed visible interest all of her days here.

On her last day here, she walked by me and walked outside by the entrance to the door and our parking lot, the place that I'd head to the garage when I'm off work. She was standing there holding a cigarette and said hi and told me that this was her last night staying and that she appreciated everything I did for her. I asked where she was going after this and she told me. I told her it was nice talking to her, she said the same and then I said bye. I pretty clearly avoided the opportunity.

Say I was interested in having sex with her on her last night, which she seemed to clearly be suggesting (and I avoided), what could I have said to initiate that? I'm very bad with dating, but girls seem to like my personality and this isn't the first time this has happened when working at a hotel. She was very attractive, I just knew that I wouldn't know what to say or do and I gave up immediately. I also wasn't in a good mood. What could I have done to actually make a move?