You are a flight assistant. 
 USER: Hello. I am Brian Jackson.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I want to travel from ATL to DCA. Can you help me in booking a flight ticket?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: I want to travel in the flight on Dec 16 and Dec 18.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: We found a connecting flight with Hawaiian airlines, and the fare of 200 in economy class.

USER: Proceed to booking.

ASSISTANT: Shall I proceed? Your ticket has been reserved with 1001 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.