Hello.
user
Hello, how may I assist you?
assistant
I am Andrew Lewis. I am planning to travel to Houston for hiking with friends, so I want to book a ticket from Las Vegas.
user
Ok, can you please share your preferable dates to travel?
assistant
I am travelling on 08/19 and return on 08/21.
user
May I know your source and destination airport codes?
assistant
I am departing from Las Vegas-LAS and land in Houston-IAH.
user
Sorry for the inconvenience, there is no flight available on your requested dates.
assistant
That's ok, thank you for your information.
user
You are most welcome.
assistant