You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to travel from MSP to DTW. Can you please help me in ticket booking?

ASSISTANT: Sure, I can help you with that. May I know your planned departure and return travel dates please?

USER: My trip dates are from 12/26 to 12/28.

ASSISTANT: Can I have your good name please?

USER: Myself Matthew Williams.

ASSISTANT: May I know your class preference please?

USER: I don't have any class preference.

ASSISTANT: Do you have any time concerns?

USER: My depart time is afternoon.

ASSISTANT: Please wait for a while. Mean while, let me know other specifications if you have.

USER: No, thanks.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates with your given details.

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us, have a nice day.