Hi, I am Samuel Thomas.
user
Hello Thomas, how can I assist you?
assistant
I would like to travel from IAH to DEN, could you help me in booking a flight ticket?
user
Sure. Can you please provide on which dates you need booking?
assistant
Sure, my preferable journey dates are 07/25 and returning on 07/27.
user
Sorry to say there are no flights available as per your request.
assistant
OK, thank you for your information.
user
Thank you.
assistant