Hi.
user
Hello, how may I be at your service today?
assistant
Could you please book a flight ticket from LAS to DEN?
user
Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
My travelling dates are Sept 30 and Oct 02.
user
Do you have any other specifications?
assistant
 And I want to return in the evening. I need a connecting flight.\.
user
Please help me with your name for booking.
assistant
I am Michael Mitchell.
user
Sorry for this inconvenience, I could not find any flight with your requirements.
assistant
Not a problem, thank you.
user
Most welcome.
assistant