You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you today?

USER: Can you help me to book a flight ticket from ATL to CLT?

ASSISTANT: Sure, when are you planning to start and return on?

USER: I want to travel on 25 Dec and return on 27 Dec.

ASSISTANT: Do you need a connecting flight?

USER:  I am willing to travel in a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in the afternoon.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: It's ok, not a problem.

ASSISTANT: Can I know your good name for documentation purpose?

USER: I am John Mitchell.

ASSISTANT: Thank you for availing with us.

USER: Thank you.