Hello, I am Lisa Nelson.
user
Hello, how can I help you today?
assistant
I need to attend a business trip in TX - IAH on 04/19 from NC - CLT and return on 04/21. Please book me a ticket with a single connection and price limit of 500.
user
Sure, please wait for a while, let me check with the airlines and get back to you.
assistant
OK.
user
Thanks for being patient, sorry, unfortunately no flights are available on that day.
assistant
Thanks for the information.
user
You are welcome, thanks for your interest.
assistant