Hello.
user
Hello. How can I help you?
assistant
I am Paul Thomas. I want to book a ticket from DTW to DEN to attend seminar, can you help me?
user
May I know your desired travel dates please?
assistant
I am departing on 01/28 and return on 01/30.
user
Sorry to say, there is no flight on your desired travel dates.
assistant
That's ok, thank you for your information.
user
Thank you for opting us.
assistant