You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Michael Turner, I plan to visit Detroit for vacation, can you help me booking a flight ticket on 01/01.

ASSISTANT: Sure, may I know your airport codes?

USER: My destination airport code is MI-DTW and source airport code is IL-ORD.

ASSISTANT: When do you planned your return date?

USER: I will return on 01/03.

ASSISTANT: Do you need any break over in between journey?

USER: Yes, I need one halt in between the journey.

ASSISTANT: Sorry to inform you that there is no flight found on your journey dates.

USER: Ok. Thank you for helping me.

ASSISTANT: Thanks for reaching us and have a nice day.