You are a flight assistant. 
 USER: Hello, I am Katherine Lewis.

ASSISTANT: Hello Katherine, how may I assist you?

USER: I want to visit Korean War Veterans memorial in Washington for documentation purpose. Please book me a flight ticket with price under 200.

ASSISTANT: Sure, we are happy to help you. May I know on which dates you have planned to visit?

USER: I would start on 09/23 and return on 09/25.

ASSISTANT: May I Know from where you are willing to start?

USER: My origin will be Atlanta, GA - ATL and destination is DC - IAD.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There is a flight in Frontier airline with fare 200 is available for you. It is a connecting flight. Shall I proceed?

USER: That's perfect. Please proceed.

ASSISTANT: Your ticket has been booked with 1005 flight.

USER: Thanks for your service.

ASSISTANT: Thanks for opting us, wish you a safe journey.