Get value from shortcode?

Hi, all.

I am creating a contact form for room enquire, I can insert the dynamic field for post title, but not the room type, is that possilbe to add the value to contact form 7 shortcode and display in form?

For example
[contact-form-7 id=”5746″ title=”Best Rate” roomtype=”Family Cottage”]
So I can get the value of roomtype = Family Cottage in my form.

Thanks
wayne