You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Anthony Smith here.

ASSISTANT: Yes, Smith.

USER: I am planning to visit Denver Art Museum in DEN. Can you help me in booking the ticket from MSP?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: Please Smith, provide me your travel dates?

USER: My planning dates are from 02/02 to 02/04.

ASSISTANT: Please wait a moment, let me check the availability of flight.

USER: Ok.

ASSISTANT: In my search, there is no flight with your request. Sorry Smith.

USER: It's fine. Anyway, thank you for you help.

ASSISTANT: Welcome.