You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kimberly Mitchell.

ASSISTANT: How may I assist you?

USER: Please book a flight ticket to Charlotte, NC from Washington, DC.

ASSISTANT: Sure, can I have your planned travel dates please?

USER: I have planned to travel on Nov 18th and return back on 20th Nov evening.

ASSISTANT: Which airport do you prefer in Washington?

USER: My preferred airport code is IAD.

ASSISTANT: Do you have any requirements?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: I found an economy class ticket in UA airlines with fare 200 and it has single connection. Can I book your ticket?

USER: May I know the return time?

ASSISTANT: Sure, it is in the evening time as per your requirement.

USER: Ok, please confirm my ticket with this flight.

ASSISTANT: Ok, your booking is confirmed with flight number 1013.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.