Hi.
user
Hello, how may I serve you at this moment?
assistant
Could you please book a flight ticket from IAH to LAS?
user
Sure, can you please share your journey dates?
assistant
My journey dates are Nov 21 and Nov 23.
user
In which class you prefer to travel?
assistant
I prefer a business class.
user
Do you have any connection limit?
assistant
I need  a single connecting flight.
user
Are there any more specifications?
assistant
No.
user
May I know your name please?
assistant
My name is Ashley Collins.
user
Sorry, there are no flights are available matching your preferences.
assistant
Not a problem, thank you for the information.
user
Thank you for approaching us.
assistant