You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Barbara Johnson.

ASSISTANT: How can I help you?

USER: I need to book a flight ticket to MI-DTW from MN-MSP.

ASSISTANT: Sure, when would you prefer to travel?

USER: I want to fly on 02/23 and return on 02/25.

ASSISTANT: Please hold on.

USER: I need a direct flight. Sure.

ASSISTANT: Thanks for your time. Unfortunately there are no flights found with your details. Thank you for reaching us.

USER: No problem, thank you for your information.