How to use command blocks in Minecraft to teleport just one player?

Hey there guys and girls, I am building a super smash bros. Melee map (I already have over half the roster and all the stages built), and I was wondering; how can you use command blocks to teleport just one player when they use an item? For example, I want a light charactor (let's say Mewtwo) to teleport up five blocks when that player right clicks with a firework star. (It can be any item, just an example) But so far I haven't found any tutorials on how to detect when a player right clicks with an item, or how to teleport just one player no matter how far away they are. Is this possible to accomplish in vanilla Minecraft?

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