Hi.
user
Hello. How can I assist you now?
assistant
I need to book a flight ticket from DEN to DTW, can you help me in booking a flight ticket?
user
Sure, I will help you with that. Can I have your travel dates  please?
assistant
Sure, my journey dates are Jun 12 and Jun 14.
user
Ok,  please let me know your  preferable timings of  your  journey.
assistant
I am comfortable with any time.
user
Do you have any other specifications?
assistant
I prefer maximum one connection.
user
Can I have your  good name please?
assistant
Sure, Brenda Williams here.
user
Sorry to inform you that no flight is available to you on your  planned dates.
assistant
Ok, no worries at all. Thank you for your information.
user
Thank you for choosing us, have a good day.
assistant