How do you make a player dive when he is sprinting and hits the jump button twice?

I know that this might be a hard question to solve, but it would really help out my game if it would work. You know how in Call of Duty when you are sprinting, and the player hits the crouch button while the player is sprinting and the Call of Duty avatar dives? I would like to know how I would do that in roblox. I would like to know how I can get my player to dive when the player is sprinting and hits the jump button twice (or a button on the side). Thank you for your help!