Creating a line between two surfaces / Trim line using surface

Grasshopper
1

Hi all,
I have available points. I want to raise the lines starting from these points up to a surface. How can I do that? I think I can trim the lines starting from these points using the surface. But since I’m new I don’t know how to do this.
Thank you.

2

Use the component below

Then create a line using the component below