You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER:  I am Ryan Roberts want to attend a live Musical Concert at WA-SEA.

ASSISTANT: How can I provide service to you?

USER:  Can you book a ticket from NC-CLT?

ASSISTANT: Sure, please provide your journey dates?

USER: My journey dates are 05/17 and 05/19.

ASSISTANT: How much you can afford for a flight ticket?

USER: I can afford up to 5000.

ASSISTANT: Ok, are you looking for connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT: Please wait, I will revert to you.

USER: Ok.

ASSISTANT: Thanks for being patience, there were no flights available with your given information.

USER: Ok, no problem. Thank you for your help.

ASSISTANT: Thanks for availing us.