Hello.
user
Hello, how best can I assist you?
assistant
I am planning to meet my brother at Las Vegas, will you help me in booking the flight in business class from HOU to LAS?
user
Sure, when do you want to start and return on?
assistant
My preferable journey dates are Nov 19 and Nov 21.
user
Do you need  a connecting flight?
assistant
I need a flight with single connection.
user
Do you have any other specifications?
assistant
I would like to return in evening time.
user
Can I know your good name?
assistant
Myself Patrick Jackson.
user
Thank you for your details, we found a direct flight 1009 in class economy which is in United airline. Shall I proceed?
assistant
I have already mentioned that I need a flight in  business class, can you please help with that?
user
Thank you for your details, there are no flights found with the given details.
assistant
Ok, not an issue. Thank you for your information.
user
Thank you.
assistant