You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Debra Lewis. I have to go to IAD, can you help me in booking a flight ticket?

ASSISTANT: Sure Debra, can I know the travel dates please?

USER: I am planning from 10/09 to 10/11.

ASSISTANT: May I know your departure code please?

USER: Sure, my source code is JFK.

ASSISTANT: Ok, wait a moment please. There is a flight for you in Hawaiian airline, shall I book it?

USER: Yes.

ASSISTANT: Your ticket has been booked with flight number 1020.

USER: Thank you.

ASSISTANT: You are welcome.