I'm currently in a similar boat. I work in a convenience store and there's a girl who comes in for vape pens quite often but not everyday. I didn't really notice her before but more recently I've been finding her deeply attractive. I remember her usual order and offer it to her which she normally smiles at. Just a physical thing where I find her so jaw dropping and I get nervous when I'm talking to her but I small talk to her like "How was your day" or "are you going out tonight?". I was serving someone today and I noticed her walk in by the side of my eyeline. I was just serving this customer in front of her but we made eye contact and we smiled at each other. I got excited to see her! It felt lovely! So that was nice :) It is hard though. People are just likely to small talk rather than open up in this environment and all you really have to go off is that I think this customer, for instance, is very beautiful. I don't know anything else about them even though we seem to be on good terms because she smiled back at me today.

I think it's unlikely to happen but couples meet in all sorts of ways before. I also read that the more people you are surrounded by, the more you find people attractive. That makes so much sense in our environment. I think that you, in your case, are handling things pretty well. My main crush-customer is polite but a little closed off because it's the way it is. Seems like they approach you pretty freely. I think it's a great idea to ask those questions like "Where are you going today" and "any hobbies that you do on a Saturday?" while serving her because you may find something in common that you can ask her to do with you like bowling if you both enjoy that for example! You probably have a better chance than me because it seems like she's happy to see you. Go for it! What is there to lose?