You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Allen.

ASSISTANT: How can I assist you?

USER: I want to book a ticket from MCO to LGA to meet my uncle, can you help me in booking?

ASSISTANT: Sure, please share travel dates.

USER: I am departing on 05/25 and return on 02/27.

ASSISTANT: Please check the dates.

USER: Sorry, It is on 05/27.

ASSISTANT: Gary, there is no flight available on your requested dates.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome.