Hello. What do you mean, the car is reserved?

The driver took the bill. The driver takes the order, so the system will show that the reservation is successful. You can call to confirm it, in case either party can't go for the time being. Just make sure that you will arrive at the appointed time and set off at the appointed place. Everyone should control the time and don't break the promise, otherwise it will bring necessary trouble and loss to the other party.