Hello.
user
Hello, how may I assist you?
assistant
This is Angela Hernandez. I want to visit Houston, TX - IAH  to meet my relatives, please help me in booking a flight ticket.
user
Sure, may I know your travel dates?
assistant
My travel dates are from 05/12 to 05/14.
user
Where do you leave from?
assistant
I want to leave from NV- LAS.
user
Sorry there is no flight on your route.
assistant
No problem, I will find my alternative.
user
Thank you.
assistant
Thanks for your information.
user