You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Katherine Miller. I want to book a flight ticket to meet client in Los Angeles in the month of May. Can you please help me in booking my flight ticket from ORD?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Thank you for accepting my request, I am willing to start my journey from 05/28 to 05/30.

ASSISTANT: Can you please provide your destination airport codes?

USER: Sure, my destination airport code is LAX.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: Ok, not a problem. Anyways thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.