Replace paper job sheets with a phone form

Help me turn my paper job sheet into a phone form.

My trade: [what you do]
Current job sheet: [paste or describe the boxes]
What I need for invoicing: [time, materials, extras]
What the customer needs: [e.g. a summary, aftercare]
Who fills it in: [me, staff]

First ask me up to 4 short questions. Wait for my answers.

Then:
1. Form questions in the order a job happens, with answer types (dropdowns where possible).
2. A sheet layout ready for invoicing, with an 'invoiced' column.
3. A message template to send the customer a summary.
4. A daily routine so every job is invoiced the same day.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts or figures. UK English.

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