You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I am Robert Moore want to book a flight ticket to MSP from DTW, can you please help me in booking?

ASSISTANT: Can you share your trip dates?

USER: My trip dates are from Nov 13 to Nov 15.

ASSISTANT: May I know your depart and arrival time?

USER: I would like to depart in the afternoon.

ASSISTANT: Do you need any stopover in between the journey?

USER: No, I need a direct flight.

ASSISTANT: Is there any specific class preference?

USER: No.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights found with your required details.

USER: OK, no problem. Thank you.

ASSISTANT: Thank you for choosing us.