You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am Steven White. I am planning to book a ticket from DCA to SEA. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, we are gleeful to assist you in booking. On which dates would you like me to book a flight ticket for you?

USER: I would like to travel on Oct 06 and return back on Oct 08.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Thank you for sharing your journey details, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for approaching us.