You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Anthony Johnson. I am looking for a flight from ORD to LAS , can you help me in booking the flight ticket from Chicago?

ASSISTANT: May I know your travel dates?

USER: Sure, my planned travel dates are 01/04 and 01/06.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: That's ok, no problem. I will reach my destination through some other way.

ASSISTANT: Thank you for reaching us.

USER: Thank you for contacting us.