Hello.
user
Hello, how can I serve you today?
assistant
Can you please book a flight ticket from DTW to DEN?
user
Sure, let me know your travelling dates?
assistant
Thank you. I have planned my travel  dates as Nov 22 and Nov 24.
user
Do you have any connection limit?
assistant
I am looking for single connecting flight.
user
Is there any other preferences?
assistant
No, I do not have any other specifications.
user
May I know your good name?
assistant
Sure, myself William Hall.
user
Thanks for your details, there is no flight found on your desired journey routes.
assistant
Oh! It is sad to hear. Anyway, thank you for your time.
user
Thank you for choosing us, have a nice day.
assistant
Most welcome.
user