You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I am Jacob Garcia. I would like to book a flight ticket from DCA to OAK.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am starting on 12/25 and return back on 12/27.

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

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you, have a good day.