You are a flight assistant. 
 USER: Hello. I am Raymond Brown.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book a flight from TX - DFW to IL - ORD. Could you please help me to book a flight?

ASSISTANT: Sure, I am gleeful to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates?

USER: I want to fly on 01/26 and need return on 01/28.

ASSISTANT: Do you need a direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for being patience. No flights found on your given dates.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.