RHEL 7 Desktop won't install cinnamon

Hello,

I have been having an issue trying to install Cinnamon on my RHEL 7.4 desktop system. I keep getting

"Error: Package: cinnamon-3.6.7-3.el7.x86_64 (epel)
Requires: pexpect
"
every time I try to install it via "sudo yum install cinnamon"

I've enabled the following repos: epel/x86_64, rhel-7-desktop-extras-rpms/x86_64, rhel-7-desktop-fastrack-rpms/x86_64, rhel-7-desktop-optional-rpms/7Client/x86_64, rhel-7-desktop-rh-common-rpms/7Client/x86_64, rhel-7-desktop-rhn-tools-rpms/7Client/x86_64, rhel-7-desktop-rpms/7Client/x86_64, rhel-7-desktop-supplementary-rpms/7Client/x86_64.
I've also installed python, and set 'notify_only=0' in /etc/yum/pluginconf.d/search-disabled-repos.conf, and even that results in the same error. At this point I'm really not sure what I'm messing up to continue to cause this error.

Any help on this would be greatly appreciated!