You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you today?

USER: I am Sharon Brown. I want to book a ticket to Orlando, FL - MCO.

ASSISTANT: May I know your origin point?

USER: Philadelphia, PA - PHL.

ASSISTANT: Let me know your travelling dates?

USER: My travelling dates will be on Jan 27 to Jan 29.

ASSISTANT: Unfortunately no flight found on your information.

USER: OK, thank you.

ASSISTANT: Thank you, have a nice day.