Hello.
user
Hello. How may I assist you?
assistant
I am panning to visit  Denver, will you help me in booking the business class flight from HOU to DEN?
user
Yes, can you tell me your dates of travel?
assistant
My preferable journey dates are Oct 27 and Oct 29.
user
Do you have any other preferences?
assistant
I need a flight with single connection which departs in evening time.
user
Give me a moment.
assistant
Sure, take your own time.
user
Sorry to inform you that there are no flights found on your requested criteria.
assistant
Ok, not an issue. Thank you for your information.
user
Can I know your name?
assistant
Myself Helen Hernandez.
user
Thank you for contacting us.
assistant