You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Can you please help me in booking the flight ticket from MSP to DEN?

ASSISTANT: Sure, I am here to help you for this. When would you like to travel?

USER: My travel dates are DEC 9 and DEC 11.

ASSISTANT: Do you have any criteria?

USER: I prefer to travel in business class with single connection.

ASSISTANT: Is there any other specifications regarding your journey?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Brenda Anderson.

ASSISTANT: Sorry to inform, no flights are found with your criteria.

USER: Ok, thank you for the information.

ASSISTANT: Thank you very much for contacting our agency.