Hello.
Hello, how can I help you?
I am William Robinson. I need to book a ticket to meet my sister in  Chicago on 01/18. Could you please help me in doing that?
Sure, may I know your airport coeds?
My travelling airport codes are LAS and ORD.
Please share you travelling dates.
I intend to return on 01/20.
Please wait.
Sure.
No flight available on given dates by you.
No problem, thank you for your information.
Thank you.