Hi, I am Mark king.
Hello, can I assist you?
Can you please book a flight ticket to New York, JFK as I want attend  a meeting?
Ok, let me know your travel dates.
I want to travel on 08/29 to 08/31.
Ok, can you share your other airport code?
My source point is Houston, HOU.
Thanks for your details. Sorry, there is no flight on your required dates.
It's ok, thank you for the information.
Thanks for picking us.