You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have a plan to visit San Francisco. Can you please help me in booking flight ticket from MCO to SFO?

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are Feb 11 to Feb 13.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight in business class.

ASSISTANT: Let me know your name.

USER: Myself Nancy Wilson.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.