You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a flight ticket from IAD to MSP?

ASSISTANT: Sure, please share your planned travel dates?

USER: My trip dates are June 18 and June 20.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight on this route.

ASSISTANT: Any other preferences?

USER: I would like to prefer economy class flight ticket.

ASSISTANT: Can I have your name please?

USER: I am Kathleen Johnson.

ASSISTANT: Frontier airlines flight 1004 available with connection and fare is 100, shall I confirm this economy class flight?

USER: Please confirm it.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.