as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
draft five customer service email subject lines.
user
1. request for refund - please read 
2. need assistance with order #1234
3. inquiry - did you receive your order?
4. we appreciate your business - thank you!
5. check out our new deals and promotions!
assistant