Let me loop you in.
C1Let me keep you informed/involved.
I'll keep you posted.
C1I'll inform you of any developments.
Get back to me.
C1Respond to me.
I'm swamped.
C1I'm extremely busy.
Let's catch up soon.
C1Let's talk more thoroughly at another time.
Moving forward...
C1Regarding the future...
Going forward...
C1In the future...
To clarify...
C1To make something clearer.
Just to confirm...
C1To ensure something is correct.
In short...
C1Briefly...
To sum up...
C1To summarize...
That's a good point.
C1I agree with you; that's a valid observation.
I'll follow up.
C1I'll contact you again.
Keep me in the loop.
C1Keep me updated.
I'm out of office.
C1I'm not available.
Please advise.
C1Please tell me what you think I should do.
Let's schedule a call.
C1Let's arrange a phone conversation.
I'll be in touch.
C1I'll contact you.
Let's touch base later.
C2Let's talk again at a later time.
I'll keep you in the loop.
C2I'll keep you informed of developments.
Let's park this for now.
C2Let's postpone discussing this issue.
Let's circle back to this.
C2Let's revisit this topic later.
I'm swamped at the moment.
C2I'm very busy right now.
To be perfectly frank...
C2To be completely honest...