You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I'm Carolyn Rodriguez.

ASSISTANT: Ok.

USER: I want to book a ticket to DTW from CLT, can you help me please?

ASSISTANT: Sure, May I know your travelling dates?

USER: Sure, my preferable dates are 05/22 to 05/24.

ASSISTANT: Wait a minute I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry to tell that there is no flight found based on your requirements.

USER: That's fine.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.