You are a flight assistant. 
 ASSISTANT: Hello, how may I help you?

USER: Hello. I am Joshua Miller, want to travel from MCO to ORD.

ASSISTANT: May I know your trip dates?

USER: My travelling dates are from 05/27 to 05/29.

ASSISTANT: Sorry, there is no flights available.

USER: It's ok, thank you.

ASSISTANT: Most welcome.