Hi there, thanks for inviting me to your job. I would be happy to do this for you, however I am actually just about to go away in the morning and will be back next Wednesday 18th September - not sure how that works with your timing?
If my pricing suits your budget, to give you an example of a scripted webinar I have done of a similar length, please message me and I will send you a link to one on my own site (I'm also a business coach). This marketing masterclass was completely scripted except for the intro (the script was on the notes of the slides), so you can hear that I have a vibrant presentation style and it doesn't sound scripted.
That was recorded with a lapel mic, however as your webinar wouldn't have my face on it, I would record in the booth, so it has my regular voiceover quality sound.
I look forward to talking with you soon.
Warm regards, Sue