You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Can you please help me to book a ticket from DFW to ORD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to start on Nov 6 and return on Nov 8.

ASSISTANT: Do you have any particular depart and return time preference?

USER: I want to return in the evening.

ASSISTANT: May I know which airline would you prefer to travel?

USER: I would prefer normal-cost airlines.

ASSISTANT: Sure, is there any other preference do you have?

USER: I need a connecting flight.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure.

ASSISTANT: We don't have any flight available which meets all your needs.

USER: Ok, not an issue. Thank you.

ASSISTANT: Can you please share your name for our record purpose?

USER: Deborah Mitchell here.

ASSISTANT: Thank you.