You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your service?

USER: Please book a flight from Charlotte, CLT to Washington, IAD.

ASSISTANT: Ok, please share your dates of journey?

USER: My live concert program going to be held on 10/06, so I should be in Washington on 10/05. I will return on 10/07.

ASSISTANT: May I know your name please?

USER: I am William Carter.

ASSISTANT: Spirit airline is available for you with fare 100.

USER: Ok. You can proceed to book if it is a connecting flight.

ASSISTANT: Ok, your booking has been confirmed with 1004. It has a connection.

USER: Thank you.

ASSISTANT: Thanks for availing our service.