You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Can you find a flight for me from ORD to LAS?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: Ok, my trip dates are from Feb 20 to 22.

ASSISTANT: Do you have any connection limit preference?

USER: I would like to departure in he afternoon time with single connection.

ASSISTANT: May I know your name to proceed further?

USER: Sure, I am Kevin Thomas.

ASSISTANT: Kevin Thomas, there are no flight services available on this route on your provided dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for contacting us.