You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joseph Jackson here.

ASSISTANT: How may I aid you?

USER: I would like to meet my brother at Dallas, please help me in booking a ticket from ORD to DFW.

ASSISTANT: Sure, I am gleeful to help you. Could you please share your travel dates?

USER: My planned travel dates are on Oct 30 and Nov 01.

ASSISTANT: Do you prefer any halt in between journey?

USER: No, I need a direct flight.

ASSISTANT: Sorry, there are no direct flights on your travel dates.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for choosing us.