Hello.
Hello, how may I aid you today from my end?
I am Sarah Perez here. I would like to reserve my ticket from IAH to LAX. Can you please help me with booking?
Sure, I am here to help you out. Please provide me your trip dates.
My planned trip dates are from Feb 18 to Feb 20.
Do you have any requirement?
I am looking for a direct flight in my journey and my depart time is afternoon.
Do you have any class?
No, I am comfortable with any class.
Sorry  Sarah Perez, there is no flight in your route.