The Importance of Transparent Communication
Transparent communication is extremely important if you want people to like you and feel safe with you.
Even if you haven't made a decision yet, or if you haven't had time to check for whatever information someone is asking you for, make sure you tell what's going on.
"Hey, I haven't had time to do (x), but I'll let you know before Friday about what I think."
That at least makes someone calm down.
But if you don't tell someone transparently what's going on, they lose interest.