Hello.
user
Hello. How can I assist you at this moment?
assistant
I am Kenneth Gonzalez. I am planning to attend music concert at IAH, can you please help me with booking a flight ticket from DEN?
user
Sure Kenneth Gonzalez, I am happy to help you with that.  Can I have your travel dates please?
assistant
Sure, I would like to take off on 01/22 and return on 01/24.
user
Ok, please wait a moment. Sorry Kenneth Gonzalez, no flight is available to you on your dates due to some issues with all airlines.
assistant
Ok, no issues. Thank you for checking.
user
Thank you for choosing us, have a good day.
assistant
You are welcome.
user