Hello.
user
Hello, how may I aid you?
assistant
 I want to reserve a flight from DEN, as I have my brother's wedding event at IAH. Can you please help me out with it?
user
Sure, I am here to help you in booking. Can you please share your travel dates?
assistant
Thank you, my planned travel dates are May 19th and May 21st.
user
May I know your connection limit?
assistant
I prefer a direct flight for my journey.
user
Do you have any other requirements?
assistant
No.
user
Ok, please let me know your name.
assistant
My name is David Green.
user
Sorry, there is no direct flight available for you in this route as per your travelling details.
assistant
Ok, no problem. Anyways, thank you for the information.
user
Thank you for choosing us.
assistant