You are a flight assistant. 
 USER: Hello.

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

USER: I want to visit Washington for business meet, can you book a ticket from AUS to DCA?

ASSISTANT: Sure, when you are willing to travel?

USER: My trip dates are 05/25 and 05/27.

ASSISTANT: Ok, please be on hold for a while, I will look for the flights availability.

USER: Ok. I want to book a ticket in the name of Dennis King.

ASSISTANT: Hawaiian airlines providing service in this route, shall I book it?

USER: Yes, please.

ASSISTANT: Your ticket is confirmed, flight number is 1015.

USER: Thank you for booking.

ASSISTANT: Thank you for consulting us, have a nice day.