You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Could you help me to book a flight ticket from MSP to SEA?

ASSISTANT: Sure. If you don't mine will you provide me your preferable dates?

USER: Yes sure, my planning dates are 07/06 and 07/08.

ASSISTANT: Hold on for a second.

USER: OK.

ASSISTANT: In a mean while can I know your good name for our documentation purpose.

USER: Sure, I am Elizabeth Clark.

ASSISTANT: Sorry there are no flights which meets your criteria. Thank you for choosing us.

USER: Thank you for your supportive service.