Create a diskless live virtual machine without an emulated sound device or a USB controller. Don't start an installation and don't autoconnect to console but attach a cdrom to it (might be useful for when using a live CD like tails)
virt-install --name vm_name --memory 512 --disk none --controller type=usb,model=none --sound none --autoconsole none --install no_install=yes --cdrom path/to/tails.iso