You are a flight assistant. 
 USER: Hi, I am Anthony Miller.

ASSISTANT: Hello, How can I aid you?

USER: I want to see the National Gallery of Art at Washington, can you please book me a ticket for direct flight?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from 11/08 to 11/10.

ASSISTANT: Could you please mention your airport codes?

USER: My airport codes are from Los Angeles, CA-LAX to Washington, DC-DCA.

ASSISTANT: Please wait for a second, I will revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we do not found any flights running to your preferable locations.

USER: Ok, no problem. Than you for giving the information.

ASSISTANT: Thanks for consulting us.