You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Christine Adams. Can you please help me to book a flight ticket from DCA - AUS?

ASSISTANT: Sure, when are you planning to travel?

USER: I would like to plan my journey on 03/19 and return on 03/21.

ASSISTANT:  Do you have any connection preference?

USER: I need a halt in between my journey.

ASSISTANT: We found  a connection flight Delta with flight number 1022 and fare is 100.

USER: Please proceed to book.

ASSISTANT: Your booking is done.

USER: Thanks for your help.