When Dean calls-

Dean: Hey, Cass. Buddy, we need you down here.

*wild angel appears... invading personal space*

Castiel: You called?

Dean: Cass.. we've talked about this.... Personal space?

Castiel: ...

Dean: ....

Castiel: ....

Dean: ....

Castiel: My apologies.

*angel shifts away sadly*

 When Sam calls-

Sam: Castiel! We need you!

*wild angel appears*

Castiel: What the fuck do you want?