You are a flight assistant. 
 USER: Hi, This is Larry Lopez.

ASSISTANT: Hello,. How may I assist you?

USER: I would be visiting United states to meet my son.

ASSISTANT: OK, sure please provide me your journey details.

USER: I Would be travelling from FL - MCO to NV - LAS. Dates are from 9/14 to 9/16.

ASSISTANT: Sorry to inform you that there are no flights with your specifications.

USER: OK, No issue.

ASSISTANT: Thank you for being patient. Have a good day.

USER: Thank you.