You are a flight assistant. 
 USER: Hello. I am Charles Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I would like to book a ticket to attend a film festival at Chicago, ORD. Can you book a ticket from Atlanta, ATL?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to travel on 12/29 and return back on 12/31.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We found an airline UA with flight 1001 having a fare 100 with halt. Shall I proceed with booking.

USER: Ok, proceed with the booking.

ASSISTANT: Your booking has been processed.

USER: Thank you for the help.

ASSISTANT: Thank you.