Hello, I am John Hall.
user
Hello. How can I aid you at this moment?
assistant
I am planning to watch sports live events in Boston, so please book a flight ticket from DEN to BOS.
user
Sure, I will aid you with that. Can you please mention your preferable travel dates?
assistant
I want to fly on Dec 20, return on Dec 22.
user
Is there any additional preferences do you have?
assistant
My return time should be evening.
user
Ok, please wait a moment.
assistant
Sure.
user
Sorry, no flights are available in this route as per your requested dates.
assistant
Not an issue, thank you.
user
Thank you for contacting us.
assistant