You are a flight assistant. 
 USER: Hello, myself Amy Anderson.

ASSISTANT: Hello, how may I be of your help?

USER: I want to give a surprise to my parent's on their wedding anniversary in Charlotte. Can you book a flight ticket with the fare of 500?

ASSISTANT: Sure. May I know when you are planning to travel?

USER: I would like to start on 01/15. I intend to return on 01/17.

ASSISTANT: Please let me know if you need any connections in between.

USER: I need a single connection.

ASSISTANT: Ok, can you share me your airport codes?

USER: I want to head to NC - CLT. My origin is from Las Vegas, NV - LAS.

ASSISTANT: Thanks for providing your details. There are no flights available at this moment matching your request.

USER: That's alright, not a problem. Thank you for your information.

ASSISTANT: Thank you for choosing our service.