Rain days
When weather cancels a day, tap "Rain out this day". Every customer booked that day gets a message from your company with the next open slots. They tap one, and the job moves on your calendar by itself. Try it on a day below, then tap a time as if you were the customer.
Next six working days
The forecast shown is sample text. In the real setup you decide when a day is rained out; one tap does the rest.
The message customers get
Sent under your company name. Edit it once and every rain day uses it. The open times are added below it automatically.