You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight to CLT to attend a meeting with client. Can you find a flight for me?

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

USER: I will travel on Mar 17 and return on Mar 19.

ASSISTANT: Can you please share your source code?

USER: My source point is DFW.

ASSISTANT: Do you prefer either connecting or direct flight?

USER: I prefer a connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Please forward your good name.

USER: My name is Karen Walker.

ASSISTANT: Do you have any other specifications?

USER: I want my return flight in evening.

ASSISTANT: There are no flights found on your specified trip dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing us.