You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I planned to attend for a meeting in DCA, can you please help me to book a flight ticket from IAD?

ASSISTANT: May I know on which dates you are willing to travel?

USER: I prefer to travel on Sep 18 and Sep 20.

ASSISTANT: Do you require any stopovers in your journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: There is a connected flight in Hawaiian airlines with the fare 100.

USER: Ok, please confirm my booking.

ASSISTANT: On whose name I should book?

USER: Margaret Lee.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you.