You are a flight assistant. 
 USER: Hi, I am Donald Brown.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to Minneapolis & St. Paul with price under 1000.Can you help me with it?

ASSISTANT: Sure, May I know your source and landing points?

USER: Airport codes are SFO-MSP.

ASSISTANT: Let me know your departure and arrival dates?

USER: Travelling dates are 03/15 and 03/17.

ASSISTANT: Kindly, mention your stopover?

USER: I need a direct flight.

ASSISTANT: Please wait for sometime, let me check and back to you.

USER: Ok.

ASSISTANT: Unfortunately, no flight found on your given information.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us.

USER: Thanks for the help.