You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Davis.

ASSISTANT: How may I help you today?

USER: I want to book a flight ticket from Charlotte CLT. Can you find a flight ticket for me?

ASSISTANT: Sure, let me know your travel dates please?

USER: Ok, my journey dates are on Dec 08 and return on Dec 10.

ASSISTANT: Could you please share me your destination airport code?

USER: Ok, my destination airport code is IAD.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: I want to return in the afternoon time.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: Ok, is there any class preference?

USER: No, I don't have any class preferences.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: UA airlines is providing connecting flight with the ticket fare of 200 and depart time is 10:00 AM, arrival time is 17:00 PM. Shall I proceed?

USER: Ok, you can proceed with the ticket booking.

ASSISTANT: Your ticket has been confirmed by flight number 1002 and an economy class.

USER: Thank you for your great service.

ASSISTANT: Thanks for choosing us.