how do you get dump to assume "yes" to its questions

[Scott Renna]

Hello all,

I've managed to start utilizing dump and the flags to exclude certain
directories.  The problem i've run into is when i try to back up
/usr....it's so big and dump breaks it up into tinier pieces(i'm dumping
to a file).  it asks me if the new volume is mounted and ready to go. 
Obviously it is...is there a way for dump to just run through all this
without bothering me?