You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight ticket from LAX to DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 12/24 and 12/26.

ASSISTANT: Please share me your name.

USER: Jacob White here.

ASSISTANT: Do you have any specifications?

USER: I prefer to travel on a direct flight.

ASSISTANT: Sorry, there is no flight at this moment.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you.