how do i obtain impulse response

hi I have some problems for calculating impulse response. I have a vector

u(t)=[1,1,1,1,1,-1,-1,-1,-1,-1,-1];

and

y(t)=[0,0.13,0.09,0.10,0.10,0.10,-0.17,-0.08,-0.11,-0.10,-0.10].

Now I want to find impulse response how can i do it? please help me