You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Stephanie Thomas. I want to book  a flight ticket to attend a client meeting on 01/26. So, my travelling dates would be 01/25 and 01/27. Can you help me with booking?

ASSISTANT: Sure, please provide me airport codes.

USER: FL-MCO and NV-LAS are my preferable airport codes.

ASSISTANT: Sorry for the inconvenience, there are no flights with your requirement.

USER: No issue. Thank you for your help.

ASSISTANT: Have a good day.