Hello.
user
Hello, how can I assist you now?
assistant
I am planning to attend music concert at JFK, can you please help me with booking a flight ticket from DEN?
user
Sure, can I have your travel dates please?
assistant
I would like to take off on July 24 and return on July 26.
user
Ok, please let me know your  preferences.
assistant
I am looking for a connecting flight.
user
Do you  have any other specifications?
assistant
No.
user
Can I have your  good name please?
assistant
My name is Nancy Perez.
user
Sorry to inform you that no flight is available to you on your  planned  dates.
assistant
Ok, no issues, thank you for the information.
user
Thank you for choosing us.
assistant
You are welcome.
user