How can I make a disk to install OS X?

I removed SSD in 'DISK UTILITY' to reset my mac book Air.

After removing SSD, I'm trying to reinstall OS X(Yosemite 10.10).

Next step of the agreement of terms, there is no selection on the text - Select the disk where you want to install OS X.

I think I have to set sth in 'Disk Utility' or the others.

Please let me know how to fix it.

Thank you!