You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Joseph Garcia. I would like to visit LGA to meet my sister, can you please find a flight from MCO?

ASSISTANT: Sure, I will help you to book a flight. Can you please provide me your travelling dates?

USER: My travelling dates are from 03/21 till 03/23.

ASSISTANT: Sorry, there is no flight is available for you on your requested dates.

USER: It's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.