You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking a flight ticket to DCA from BOS in October month?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: Thank you for considering my request, my travel dates are Oct 13 and Oct 15.

ASSISTANT: Do you prefer direct or single connected flight?

USER: I need direct flight for my journey.

ASSISTANT: Please let me know if you have any other specifications.

USER: No.

ASSISTANT: Can I have your good name please?

USER: Sure, my name is Timothy King.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: Not a problem with that, anyways thank you for the information.

ASSISTANT: Thank you for choosing us.