Hello, my name is Pat Hopkins.
I have access to a large amount of actors so choosing the perfect one for your testimonial shouldn't be an issue. (gender/age/race)
The highly skilled actors I have access to can:
Wear whatever type of attire you wish them to (Business, business casual, casual etc)
Demonstrate whatever mood you want them to: Relief, ecstatic, grateful etc
Have an end approach, "saved me time/money/effort"
(-As you mentioned, shooting indoor will not be a problem)
Please contact me if you have any questions or wish to discuss further details. I hope you accept my offer and we can do business together, I look forward to hearing back from you.
Thanks