You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in booking a flight from DCA to AUS?

ASSISTANT: Can I know your travelling dates?

USER: My planned dates are on Aug 7th to 9th.

ASSISTANT: May I know your name?

USER: Sure, my name is Donald Smith.

ASSISTANT: Do you need any connecting flight?

USER: Yes, I prefer it.

ASSISTANT: Here is a connecting flight with fare 200 and 1025 as flight number in Delta Airline. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket is confirmed in economy class.

USER: Thank you.

ASSISTANT: Most welcome.