You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Sharon Walker. Can you please help me with booking a flight ticket from NY - LGA to FL - MCO?

ASSISTANT: May I know your travelling dates?

USER: Sure, my departure date is on 02/29 and the return date is on 03/02.

ASSISTANT: Sorry, there is no flight for you.

USER: OK. Thank you for the information. Have a great day.

ASSISTANT: Thank you.