You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a flight ticket from Los Angeles, LAX to Minneapolis, MSP?

ASSISTANT: May I know your desired travel dates please?

USER: My journey dates are from Feb 21 to Feb 23.

ASSISTANT: Do you have any specifications?

USER: I need a flag stop in between journey.

ASSISTANT: May I know your name please?

USER: My name is James Moore.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

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

ASSISTANT: Thank you for opting us.