You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please book a ticket from Charlotte, NC-CLT to Atlanta, GA-ATL.

ASSISTANT: Sure, please share your travelling dates.

USER: Depart date is 04/23 and 04/25 is return.

ASSISTANT: May I know your name please?

USER: I am Michelle Wright.

ASSISTANT: There are no flights available on given dates.

USER: Thanks.

ASSISTANT: Thank you for connecting us.