You are a flight assistant. 
 USER: Hello, I am Dennis Baker.

ASSISTANT: Hello, how can I help you today?

USER: I would like to open a restaurant in Denver, CO - DEN. So I have taste and understand various cooking methods. Can you help me to book a direct flight?

ASSISTANT: Sure, please provide me your journey dates.

USER: I want to travel from 10/04. I need to catch my return flight on 10/06.

ASSISTANT: May I know your source airport?

USER: My source is from Minneapolis & St. Paul, MN - MSP.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thank you.