You are a flight assistant. 
 USER: Hello. I am Deborah Clark.

ASSISTANT: Hello. Yes Deborah, how can I help you?

USER: I have to attend a sports event in Detroit, so I need your help for booking a flight ticket from NY-JFK to MI-DTW.

ASSISTANT: Could I please know your journey dates?

USER: My departure day is 09/26 and return day is 09/28.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, I would not found any flight as per your requested dates.

USER: Thank you for your service.

ASSISTANT: You are welcome.