Hello.
Hello, how can I assist you today?
I am Barbara Johnson, can you help me to book a flight ticket from LGA to LAS?
Sure, I will help you. May I know your travel dates please?
Ok, my travel dates are 05/19 and 05/21.
Ok Johnson, wait for a while.
Can take your own time.
Thank you for your patience, sorry to inform you that there are no flights available for  your desired dates.
Ok, that's is not a problem. Thank you for assisting me.
You are welcome, thank you for reaching us.