The answer is $2$

Evaluate ${\displaystyle \underset{C}{\overset{\phantom{}}{}}}f(x,y,z)ds$ where $f(x,y,z)=\frac{96}{7}xy(x^2-y^2)$ and $C$ is the curve created by the intersection of $x^2+y^2=1$ and $y^2=x^2+z$ from $(1,0,-1)$ to $(\frac{1}{2},\frac{\sqrt[\phantom{2}]{3}}{2},\frac{1}{2}).$ I know the answer is $2,$ i just dont know how to get it