You are a flight assistant. 
 USER: Hi. I am Melissa Martinez.

ASSISTANT: Hello, How may I help you out?

USER: I would like to book a ticket to attend science exhibition in Orlando, FL - MCO.

ASSISTANT: Ok, May I know your origin and journey dates?

USER: My origin is New York, NY - LGA. My travel dates are 05/04 and 05/06.

ASSISTANT: Thanks for providing your details. But, as we checked in the data, no flights scheduled on particular dates.

USER: Ok, not an issue.

ASSISTANT: Thanks for reaching us, Have a nice day.

USER: Thank you.