You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Please book a flight ticket from DEN to CLT?

ASSISTANT: Sure, I am ravish to help you. Can you please forward your journey dates that you wish to travel?

USER: My journey dates are May 12 and May 14.

ASSISTANT: Do you prefer any way station in between journey?

USER: I need a direct flight.

ASSISTANT: May I know your good name please?

USER: I am Michelle Jones.

ASSISTANT: Thanks for your details, there are no flights available at this moment matching your particulars.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for approaching us.