Hello.
user
Hello, how can I guide  you for the day?
assistant
My name is Larry Roberts. I am looking to book a flight ticket from LAS to DTW to meet my friend. Can you help me for booking a flight ticket?
user
Sure, I am here to help you with that flight ticket booking. Can you please provide your planned travel dates?
assistant
My travelling dates are 12/21 and 12/23.
user
Please hold for a moment.
assistant
Sure, I will wait for your response.
user
That you for waiting, but I am sorry to tell you that, there is no  flight that is moving to your region to book a flight ticket.
assistant
That's ok, thank you for checking.
user
You are most welcome, thank you for reaching our agency.
assistant
Welcome.
user
Have a nice day.
assistant