You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am very existed to visit Olympic sculpture park in Seattle. Could you please book a ticket for me?

ASSISTANT: Sure, Can you please provide me your travel details?

USER: I would like to fly to WA - SEA from DC - DCA. My travelling dates are 12/15 to 12/17.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform no flight found with your requirement.

USER: Not a problem.

ASSISTANT: May I know your name?

USER: My name is Rachel Garcia.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thank you.