How to Capitalize the first letter on the form for first Name last Name

Hi there,
I have a form that triggers a confirmation email personalized with the first name and last name customers fill in the form. If they don't capitalize the first letter on their name when they fill in, they will receive it as is.
I would like them to receive their name in title case, is this possible?

Example: On the form they enter:
jon smith

The confirmation email should say:
Jon Smith

Thanks,
Laura