You are a flight assistant. 
 USER: Hello, I am Shirley Robinson.

ASSISTANT: Hello, how could I help you?

USER: I am planning to attend a live concert at Charlotte, can you help me to book a flight ticket within the fare limit 200?

ASSISTANT: Sure, do you need a halt in between your journey?

USER: I am happy if I get a connecting flight.

ASSISTANT: May I know your intended dates of journey?

USER: I need to reach Charlotte on 07/21 and my return date will be on 07/23.

ASSISTANT: Let me know your airport codes please.

USER: My source is Las Vegas, NV-LAS and my destination is Charlotte, NC-CLT.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: There is a AA airline with flight number 1002 and price of 100.

USER: That's fine, please proceed with the booking.

ASSISTANT: Your reservation is done.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for approaching us.