You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you aid me to book a flight ticket from DFW to OAK?

ASSISTANT: Sure, could I have your trip dates, please?

USER: My trip dates are Oct 31 and Nov 2 respectively.

ASSISTANT: Do you have any preferences?

USER: I prefer for connecting flight and my return time should be in the afternoon.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: Donald Walker here.

ASSISTANT: We found a connecting flight 1023 from American airlines with a fare 100.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.