You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amanda Lewis.

ASSISTANT: How can I aid you today?

USER: I would like to visit Chihuly Garden & Glass Exhibit which is at Seattle, WA - SEA.

ASSISTANT: Ok.

USER: Can you please hold me a flight ticket from Washington, DC - DCA?

ASSISTANT: Sure, When you are willing to travel?

USER: My trip dates are 08/02 - 08/04.

ASSISTANT: Ok, please hold on.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: My pleasure.

ASSISTANT:  Unfortunately there is no flight found with your given requirements in our database.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.