There are a few options for this; it just depends on which you like best.
1:
It's a shame that I cannot see you, at the moment.
It's too bad that I cannot not see you, at the moment.
It's sad that I cannot see you, at the moment.
2:
It's a shame that I could not coordinate with you in this area.
It's too bad that I could not coordinate with you in this area.
Hope this helps!