Hello.
user
Hello. How may I aid you?
assistant
I am Stephen Evans, want to travel from DEN to LAS. Please help me in booking my ticket.
user
Sure, please share your trip dates.
assistant
My travelling dates are from 10/03 to 10/05.
user
Do you have any specifications?
assistant
Yes, my return time will be in the afternoon.
user
Do you have any other preferences?
assistant
No.
user
Please wait for a while.
assistant
Sure.
user
Sorry Stephen Evans, no flights are available in the afternoon.
assistant
It's ok, thank you.
user
Thank you for choosing us.
assistant