For customers who have no wallet or insufficient wallet balance. You can pay cash.
1. Go to teller to pay for a ticket (this teller may be automated like kiosk machine).
2. Teller will inform customer about the trip price and collects money, and reserve the trip on your behalf
3. Teller will print the ticket including a ticket QR code with the trip and ticket information 4. Ticket received by customer to be used later for validation if needed