Ok the low down on the story.
I met her at a club after being introduced by a friend. Later I spoke to her on Facebook and got her number after i said she should contact me when she's up again for a party.
After that i was out in town and text her to ask if she's coming out to come and meet me and walk around town. She said she couldn't as it was cold and she was on the other side of town, which was understandable.
A few days later i send her a few text messages trying to build up attraction by teasing her and such but didn't ask her for a date or anything.
Now:
I want to ask her for a date this Saturday but i don't want it to seem try hard. She also works often and she could be working this Saturday.
What if she yet again says something like "Oh can't im working". Should i take that as rejection.
What's the best thing i should do?

Being conscious of logistics (for example, when she works) can help in navigating the uncertain waters of whether or not she's interested, but I think you shouldn't invest too much energy into this.

What I mean is, just ask her out. If you try to engineer her saying yes by finding the perfect time and the perfect outing you've already invested way too much in someone who hasn't invested very much in you yet. Just ask her out, if she says yes then sweet, go and have a fun time. If she says no and makes an excuse "I have to work" or "I've already got plans", she may be rejecting you, she may not. Personally, I give people the benefit of the doubt when it comes to stuff like this, and if she's 'busy' once or twice I take her to mean exactly that, and if something fun comes up that I'd like to have her along for I'll ask her again.

That being said, people generally make themselves available for activities they are interested in, namely spending time with men or women they're attracted to, hence if she's really putting in zero effort to either suggest another day that might work, or contacting you on her own from time to time, she's likely not interested.

On the other hand, most attractive women (and in general, attractive people) are in demand and are actually busy a lot of the time. One of the quickest ways to set yourself apart in a good way with these sorts of people, is to be laid back about availability. If you ask her to something and she can't make it, and you don't react defensively or sullenly, you communicate to her a lot of positive attributes.

Short version:

Ask her out, don't over think things. If she says she isn't available don't lose heart, but her being repeatedly unavailable is probably an indication she's not interested.

Good luck man,

Thanks for the advice bro, really appreciate it.