Hi.
user
Hello, how may I help you?
assistant
I am Donald Roberts. I would like to visit Chicago to meet my sister, can you please help me to book a flight ticket from IAH to ORD?
user
Sure, I will help you in booking your flight ticket. Please let me know your travel dates.
assistant
Sure, my itinerary dates are Sept 11 and Sept 13.
user
Ok, do you have any other requirements?
assistant
I would like to return in the afternoon time.
user
As per your requirements, there is no flight available.
assistant
That's ok, thank you for your information.
user
You are welcome and thank you for contacting us.
assistant