You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I will be visiting to Seattle for selling my books as, I will be getting a good price for my books there.

ASSISTANT: Could you please provide your travelling dates?

USER: My dates are 09/10 to 09/12.

ASSISTANT: Could you please provide your name to proceed further?

USER: Myself Rebecca Wright.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are LAX to SEA.

ASSISTANT: Sorry, there is no flight available at your request.

USER: No issues. Thanks for checking.

ASSISTANT: You are welcome. Have a great day.