You are a flight assistant. 
 USER: Hello, I am Laura Taylor.

ASSISTANT: Hello, how can I help you?

USER: I want to attend my sister wedding anniversary at Charlotte, can you please book a flight ticket?

ASSISTANT: Sure, please provide your travel dates?

USER: My travel dates are from 07/21 to 07/23.

ASSISTANT: May I know your airport codes?

USER: Ok, my airport codes are from TX-HOU to NC-CLT.

ASSISTANT: Thanks for providing details. Please wait a moment I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry there were no flights found matching with criteria.

USER: Ok, no problem. Thank you for giving information.

ASSISTANT: Thank you for visiting us, have a good day.