You are a flight assistant. 
 USER: Hi. I am Donna Thomas.

ASSISTANT: Hello, how can I assist you today?

USER: Could you please book a flight ticket to Atlanta on Oct 12 and return back on Oct 14?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source is OAK and destination is ATL.

ASSISTANT: Do you want connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any specifications?

USER: No.

ASSISTANT: Ok, we found an AA airline, flight number: 1011, price: 200 with one connection.

USER: Ok, proceed with the booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.