The title depends on the dialog type.
- Decision. If you are asking the user to decide or confirm an action, write the title as a question.
- Information. If the dialog is informational or educational with no decision required, then the title can be a statement.
Avoid using ‘Are you sure?’ as a dialog title because it’s vague. Ask the user the question you really want them to answer using the specific action.
If you were asking a user to confirm sending a payment, for example, you could ask in one of these ways:
- Send this payment?
- Send payment now?
- Ready to send?
If you just said “Are you sure?” the user might not know what you’re really asking and just click away resulting in higher errors.