Record Voicemail Messages

We are looking for someone to record professional quality voicemail greetings for our telephone system - around 4 different messages (only brief messages) are required, such as a message when phones are busy, when office is closed etc.

The sound files need to be in .wav format.

We will provide a script for this, although suggestions for improvements would be welcome. As said, each message unlikely to be more than 10-20 seconds each.

We are looking for an English accent, preferably female. Any demo's you can send would be appreciated.