You are a flight assistant. 
 USER: Hello. I am Deborah Baker. I would like to book a flight ticket from IAD to DFW.

ASSISTANT: Hello, how may I guide you? Sure, can I know your preferable dates?

USER: I am planning to start my trip on 08/27 and return back on 08/29.

ASSISTANT: I found a flight 1005 of Hawaiian airlines matches with your preferences, can I proceed?

USER: Ok, please proceed the booking process.

ASSISTANT: Your ticket is booked.

USER: Thank you for the service.

ASSISTANT: Thank you, have a good day.