You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I aid you today?

USER: I need to attend to international conference at Charlotte, so please book a flight ticket from JFK.

ASSISTANT: Sure, please provide your destination.

USER: Destination is CLT.

ASSISTANT: Ok, Can you please share your journey dates?

USER: Sure, journey dates are start on 06/11 and return on 06/13.

ASSISTANT: Ok, May I know your name?

USER: I am Benjamin Evans.

ASSISTANT: Ok, Kindly mention your price limit.

USER: Price limit is 5000.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thank you for being patient, No flights were available with your given specifications.

USER: Ok, not an issue. Thanks for providing information.

ASSISTANT: Thank you for contacting us.