You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking my flight ticket from IAH to MSP?

ASSISTANT: Sure, when do you want to start and return on?

USER: My planned travel dates are Feb 28 to Mar 01.

ASSISTANT: Do you need a connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer a business class.

ASSISTANT: Can I know your good name?

USER: Myself, Raymond Smith.

ASSISTANT: Thank you for your details, there are no flights found with given details.