You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Could you please make a reservation on the name of Carolyn Thompson to Dallas & Forth Worth, TX-DFW?

ASSISTANT: Sure, please share me your travelling dates?

USER: I want to attend a flower festival so, you can book a ticket on 12/02 and return on 12/04.

ASSISTANT: Can I know your origin code?

USER: My origin is from Washington, DC-IAD.

ASSISTANT: Thanks for providing your details.

USER: Ok.

ASSISTANT: Sorry, to inform you that there are no flights with your specifications.

USER: Not a problem, thank you for sharing the information.

ASSISTANT: Thank you.