Advise intentions
Tell me your plans
Acknowledge
Let me know you have received and understood this message
Affirmative
Yes
Confirm
Yes
Confirm
My version…is correct?
Correction
Error has been made…here is the correct version
Go ahead
State your request
Hold
Stop where you are
Hold short of
Proceed to and wait
Negative
No
Proceed
Authorized to begin/continue to move
Read back
Repeat message
Roger
I have received your message
Say again
Repeat what is said
Stand by
Wait
Unable
Indicates inability to comply
Verify
Request confirmation
Wilco
Will comply