You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

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

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

USER: I would like to depart on Mar 2nd and return on Mar 4th.

ASSISTANT: Is there any class preference for you?

USER: I am comfortable with any class.

ASSISTANT: May I know your airline preference?

USER: I have no airline preferences, but I prefer a direct flight.

ASSISTANT: Your good name please.

USER: I am Raymond Parker.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.