You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please book a flight ticket from SFO to ORD?

ASSISTANT: Sure, please share your planned trip dates?

USER: My journey dates are June 04 and June 06.

ASSISTANT: Let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Any class preference?

USER: No.

ASSISTANT: Do you have any preferred timings to fly?

USER: No.

ASSISTANT: Can I have your name please?

USER: I am Samuel Turner.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Sorry Samuel Turner, no flights found with your given details.

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

ASSISTANT: Thank you for reaching us.