Hi.
user
Hello. How can I assist you today?
assistant
I am Karen Lee. I am planning to travel from HOU to SEA, can you help in booking  a flight?
user
Definitely, I will help you with that booking. Please share your travelling dates.
assistant
My travelling dates are 05/10 to 05/12.
user
Just give a moment.
assistant
Ok.
user
Sorry, there is no flight available on your desired route.
assistant
That's ok, thank you.
user
Thank you for reaching us.
assistant