You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joseph Moore.

ASSISTANT: How can I aid you?

USER: I am looking for a flight from OAK to CLT, can you render me in booking the flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My airborne will be on 09/15 and recur will be on 09/17.

ASSISTANT: Sorry Moore, there are no flights available for your desired dates.

USER: That's ok, not an issue. Anyway thank you for your information.

ASSISTANT: Thank you for reaching us.