You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me in booking a flight ticket from San Francisco, SFO to reach Minneapolis, MSP?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: My journey dates are from Oct 15 to Oct 17.

ASSISTANT: Do you prefer any connection in between journey?

USER: Usually I prefer direct flight, If it is not there please proceed with single stopover flight.

ASSISTANT: Do you have any more specifications?

USER: No, thanks for asking.

ASSISTANT: Before check with the airlines, may I know your name please?

USER: My name is Ronald Nelson.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry we did not find any flights on your preferred routes matching your details.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for availing us.