Hello.
user
Hello. How may I help you?
assistant
I am John Miller, want to travel from IAH to LAS. Please help me in booking my ticket.
user
Sure, can you tell me your trip dates?
assistant
Sure, my trip dates are from 06/22 to 06/24.
user
Do you have any other requirements?
assistant
My return time should be in the afternoon and also I need a connecting flight.
user
Sorry, we regret to inform you that there is no flight available as per your request.
assistant
It's ok, thank you for your help.
user
Most welcome.
assistant