Hi.
user
Hello. How can I assist you at this moment?
assistant
Can you help me to book a flight ticket from LAS to CLT?
user
Sure, I am happy to help you with that. Can I have your travel dates please?
assistant
June, 30 and July, 2 are my journey dates.
user
Ok, please let me know your  preferable timings of your journey.
assistant
I am flexible with any timings.
user
Do you have any other specifications?
assistant
I need direct flight.
user
Can I have your good name please?
assistant
David Jones here.
user
Sorry to inform you that no direct flight is available to you on your planned dates.
assistant
That's ok, not an issue. Thank you for the information.
user
Thank you for choosing us, have a good day.
assistant