Hello.
Hello. How can I aid you?
Can you please help me in booking a flight ticket from Houston, HOU to reach San Francisco, SFO?
Ok, please can I know your name to proceed?
My name is James Miller.
Ok, please can I know your dates of journey to check for the flight availability?
My journey dates are from Sept 26 to Sept 28.
Ok, please let me know if you have any preferred connection limits.
I need a direct flight.
Ok, please provide  me your other intents.
I don't have any other requirements.
Ok, please wait a moment I will check for the best flight.
Sure.
Ok, thank you for waiting. Sorry as per the database there is no flight available on the route you desire.
Ok, that's not a problem.
Thank you for availing our service.