You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Margaret martin here. I need to travel from AUS to MSP, can you help me in doing that?

ASSISTANT: May I know your travel dates?

USER: My trip dates are Sep 23 to 25.

ASSISTANT: Do you have any preferences?

USER: I need a stopover and my return time is in evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.