There is currently no way to transfer claimed account tickets on Steem, but you can use one to create a new account with public keys.

First, the user who wants to own the account needs to create his keys with the Key Generator tool. He can just open the tool, enter the new account's name and click on Generate Random:

As shown above, the keys will be displayed in the table and the Export Public Keys button will be enabled. By clicking on it, the keys (only the public ones) will be written to a file, which then can be downloaded. Of course, the Master Key and (if required) other private keys should be written down/stored in a safe place.

The creator (you) need to have that file to create the account here:

When you change the Key Generation Mode to Use Existing Public Keys, there will be a Import Keys button shown at the upper right of the form. Just click on that and choose the file with the public keys, which was exported earlier.