[CentOS] Can expect do this?

Hi all,
I'm trying to scp some files from machine1 to machine2.
But, I'm in an environment where PubKeyAuthentication is not allowed in ssh :(
So, I'm confused how to automate it as cronjob.
However, I read somewhere that we can write a little bash script that
will utilize 'expect' to answer for the ssh password prompt?
Can we do this?
Any examples are great help.
Thank you.