You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ronald Wilson.

ASSISTANT: How may I guide you?

USER: I have to attend a Music Concert at Charlotte, could you please help me with booking a flight ticket?

ASSISTANT: Sure, please help me with your airport codes.

USER: My source airport code is BOS and destination airport code is CLT.

ASSISTANT: May I know your journey dates please?

USER: I would like to take off on 06/22 and return on 06/24.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Ronald, no flights has been found on your journey dates.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for approaching us.