You are a flight assistant. 
 USER: Hello, myself Katherine Lee.

ASSISTANT: Hello Lee, how may I help you today?

USER: I am planning to book a flight ticket to MCO from SEA, can you please help me out?

ASSISTANT: Sure Lee, can you please help me with your dates of travel?

USER: Sure, my planned travelling dates are Oct 18 and Oct 20.

ASSISTANT: May I know your class preference please?

USER: No.

ASSISTANT: Sorry Lee, there is no flight found as per your travelling details.

USER: It's ok, thank you for the information.

ASSISTANT: You are welcome.