You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking my flight ticket from DFW to IAD?

ASSISTANT: Sure, please share your planned travel dates?

USER: Sure, my travelling dates are from 05/25 to 05/27.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connecting flight.

ASSISTANT: Any other preferences?

USER: I would like to prefer economy class.

ASSISTANT: Can I have your name please?

USER: Myself Carolyn Anderson.

ASSISTANT: Hawaiian airlines flight 1020 available with connection and fare is 100, shall I confirm this economy class flight?

USER: Please confirm this flight ticket for me.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.