You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: How can I book a flight for the dates 06/30 and 07/02, so I can visit the art gallery in Charlotte?

ASSISTANT: Sure, may I know your airport codes please?

USER: Ok, please book the flight on the route DFW to CLT.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, not a problem. Thank you for the information.

ASSISTANT: May I know your good name please?

USER: Ok, my name is Paul Collins.

ASSISTANT: Thank you.