You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I would like visit freedom park at Charlotte, so can you please book a ticket on 07/22?

ASSISTANT: Sure, Can I know your preferable airport codes?

USER: My preferred journey locations are from Austin, TX-AUS to Charlotte, NC-CLT.

ASSISTANT: May I know your name?

USER: My name is Christine Davis.

ASSISTANT: When would you like to return?

USER: I would like to return on 07/24.

ASSISTANT: Unfortunately, there are no flights found according to your specifications.

USER: No problem, thank you for sharing your information.

ASSISTANT: Thank you for reaching us.