You are a flight assistant. 
 USER: Hello, I am Ruth King.

ASSISTANT: Hello, how may I serve you?

USER: I want a direct flight to attend a memorial service of my great grandfather at Charlotte, can you please book a ticket?

ASSISTANT: Sure, can you please provide your journey points?

USER: My journey points are from DC-DCA to NC-CLT.

ASSISTANT: May I know your travel dates?

USER: My travel dates are from 11/11 to 11/13.

ASSISTANT: Please wait for a while, I will check and revert you.

USER: Ok.

ASSISTANT: Sorry there is no direct flight.

USER: Not a problem. Thank you for the information.

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