Search Results: flirting at the gym

So I met this girl on tinder from my hometown. I know what you're thinking. However, she's 3 years older than me, and we both go to the same gym. Turns out we have some mutual friends, went to same high school, etc. I'm a college student and she wants to be in the police force. We are both working a lot, but see each other at the gym a good amount of times, as we both are fitness junkies.
Anyway, we flirt and have good conversations, and we have casual talk at the gym. However, Everytime we make plans, she reschedulers due to work or something. I can't fault her for that, but it's like the third time now within a week. I feel like I've been the one communicating more, and feel that's not being reciprocated. I know she's attracted to me, flirts with me, and has many common interests (music, gym, etc.). I'm not sure what I'm doing wrong here. I don't want to seem clingy, but I also would like to schedule a date, and also not just drop this. Also, I saw her at the gym today and asked her to be honest with what was up and she smiled at me and said "I'll let you know"... Any help?