You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I aid you?

USER: I want to travel from MI-DTW to IL-ORD,could you please let me know availability of tickets?

ASSISTANT: Ok, sure may I know your name? Please provide me with your journey dates.

USER: OK,my journey dates are 08/31 and 09/01. MY name is Kimberly Roberts.

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

USER: OK,no problem. Thank you for providing service.

ASSISTANT: Thank you for choosing us. Have a good day.