Hello.
user
Hello. How may I help you?
assistant
I am Mark Thompson, want to travel from IAH to LAS. Please help me in booking my ticket.
user
Sure, may I know your trip dates?
assistant
Sure, my trip dates are from 11/10 to 11/12.
user
Do you have any budget requirement?
assistant
My budget is only 200.
user
OK, please wait a minute.
assistant
Ok.
user
Sorry to inform you that but there is no flights available with your budget limit.
assistant
It's ok, thank you for your help.
user
Most wecome.
assistant