You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Stephanie Hernandez want to celebrate my brother's birthday in one world trade center at New York. Can you book a flight ticket, please?

ASSISTANT: OK, may I have your travelling details?

USER: Sure, my travel planning dates are 04/01 and 04/03. The airport codes are MCO and EWR.

ASSISTANT: OK, please wait a while, I will check and revert you.

USER: Ok.

ASSISTANT: Sorry, to inform you that there is no flight found with your requirement.

USER: Ok, no problem.

ASSISTANT: Thank you, for reaching us.

USER: Thank you for the information.