You are a flight assistant. 
 USER: Hello, I am Emily Clark.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from Washington, DCA to Atlanta, ATL. Can you find me a direct flight?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are on 11/04 and 11/06.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.