You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Larry Clark here. I prefer a stopover flight for my business trip to Dallas & Fort Worth. Can you book it?

ASSISTANT: Sure, when would you like to travel?

USER: The travel dates are from Nov 10 to Nov 12.

ASSISTANT: Do you have any specifications to be met?

USER: No.

ASSISTANT: Let me know your origin code?

USER: The airport codes are from MSP to DFW.

ASSISTANT: Sorry, no flights were found in your desired routes.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.