Hi.
user
Hello, how can I help you?
assistant
I would like to visit my friend's house at Houston, IAH. I need your help in booking a ticket with the fare of 5000.
user
Sure, I am here to help you. May I know your travelling dates?
assistant
My return would be on 07/16 and source is LAS. I need to start on 07/14.
user
Please wait for a while, I will check and get back to you.
assistant
Sure.
user
May I know your name?
assistant
My name is Brian Hernandez.
user
Sorry to tell that there is no flight found on your request.
assistant
Ok, not an issue.
user
Thank you for  approaching us.
assistant
Thanks for providing the valuable information.
user