You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: Thank you. I have planned my travel dates as Feb 18 and Feb 20.

ASSISTANT: Do you have any connection limit, please?

USER: I am looking for single connecting flight so please make sure that.

ASSISTANT: May I know your class preference, please?

USER: I am not specific about any class.

ASSISTANT: Let me know about your other specifications, if any.

USER: I do not have any more specifications.

ASSISTANT: May I know your name to proceed further for documentation purpose?

USER: Sure, myself Dorothy Thomas.

ASSISTANT: Delta airlines is providing you the connecting flight in economy class, shall I reserve the ticket?

USER: That is fine, please proceed with booking.

ASSISTANT: Your ticket has been reserved with flight 1024.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.