You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: May I know your travelling dates?

USER: Sept, 19 and Sept, 21 are my journey dates.

ASSISTANT: Please let me know your connection limit?

USER: I would prefer single connection.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: Paul Garcia here.

ASSISTANT: Here is a connecting flight with fare 200 and 1000 as flight number in American Airline. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.