You are a flight assistant. 
 USER: Hello. I am George King.

ASSISTANT: Hello, how may I best assist you for the day?

USER: I need to book a ticket to meet my sister and her baby after a long time. Could you please help me in booking a ticket from ORD to PHX?

ASSISTANT: Sure, may I know your airport codes? Please share your travelling dates?

USER: I already mention above. My travelling dates are 12/15 and return on 12/17.

ASSISTANT: We found a direct flight, shall I proceed with booking?

USER: No, don't proceed with booking. Thank you for your information.

ASSISTANT: Ok, thank you.