When a woman asks "what are we?" / "where is the relationship going?", it's rarely because she's needy. A lot of the time it's down to caution.
Asking someone to join you on a journey without confirming the intended destination, is basically requesting that they take a risk.
Although you may not be able to predict the end destination or the hurdles along the journey, you should be able to determine your intent. Intent is particularly important to women because time generally favours us less (biologically), so we don't like having it wasted.
That's why a lot of women aren't there for "we'll see how it goes". Many like men who know exactly what they want. Men with vision and direction.
It's not about making promises, it's about knowing what your end goal is - whether you manage to get there with that person or not.