Classify the email as 'promotional' or 'transactional', based on its contents
Dear customer,

We are pleased to inform you that your order with the following reference number has been successfully confirmed. We hope that you have a pleasant shopping experience.

Thank you.
Transactional.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Classify the email as 'promotional' or 'transactional', based on its contents

### Response:
Transactional.