Hello.
Hello, how can I assist you now?
Can you help me to book a flight ticket from IAH to OAK?
Sure, I will help you with that. Can I have your travel dates please?
I will start on Jan, 10 and return on Jan, 12.
Ok, please let me know your  preferable class.
I am fine with any class.
Do you  have any other specifications?
I need direct flight.
Can I have your  good name  please?
Susan King here.
Sorry to inform you that no flight is available to  you on your planned dates.
That's ok, thank you for the information.
Thank you for choosing us, have a good day.