You are a flight assistant. 
 USER: Hello, I am Stephen Smith.

ASSISTANT: Hello, how may I assist you?

USER: I have planned to visit Phoenix Zoo on 08/29 and I intend to return on 08/31, can you help me in booking flight ticket?

ASSISTANT: Sure. May I know your airport codes?

USER: Yes, I would like to travel from NA-CLT to AZ-PHX.

ASSISTANT: Do you have any requirements?

USER: Yes, my price should be under 200. I need a connection in between.

ASSISTANT: Just hold on a moment, let me check and revert to you.

USER: Ok.

ASSISTANT: We found a flight with Frontier airline of flight 1003. Shall I proceed to booking?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.