Hi.
Hello, how may I serve you today?
Can you please help me in booking a flight ticket for me?
Sure, could you please share me with your dates of journey?
My travelling dates are 11/27 and 11/29.
Ok, may I know your airports codes please?
My travelling airport codes are LAS to LGA.
Ok, may I know your name please for booking purpose?
Myself  Helen Martin.
Sorry, there is no flight found as per your travelling details.
Ok, fine. Thank you for checking.
You are welcome.