You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Helen Hall. I have a  business meeting in Dallas. Can you help me for booking a flight ticket from ATL to DFW?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are Dec 22 and Dec 24.

ASSISTANT: Do you need any whistle stop in between journey?

USER: I need a single connecting flight.

ASSISTANT: Which class do you prefer either economy or business?

USER: I am comfortable with all any class.

ASSISTANT: We found a connecting flight of fare 100 with airline 1021. Can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for availing us.