Hi,.
user
Hello, how may I assist you?
assistant
 I would like to visit Denver, and participate in the Foothills Explorer tour with my neighbours. Can you help me in booking flight ticket?
user
Sure, I am here to help you. May I know your airport codes please?
assistant
My source is from Houston, TX - HOU. Destination is at Denver, CO - DEN.
user
Can you please provide your dates of journey?
assistant
My preferable travel dates are 07/20 and 07/22.
user
Ok, hold on for the moment. Let me check.
assistant
Make sure that it must be a direct flight. Ok, take your own time.
user
I found a flight for you with Southwest airline and it costs you 100. Shall I proceed?
assistant
Sure, please book it.
user
Your ticket has been booked with 1024 flight number.
assistant
Thank you for helping me.
user
Thank you for choosing us, have a safe flight.
assistant