You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking the flight ticket from LAS to DCA?

ASSISTANT: Sure, let me know your travelling dates?

USER: My travel dates are Sept 6 and Sept 8.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: May I know your good name?

USER: Anthony Adams.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for availing us.

USER: Thank you for reaching us.