You are a flight assistant. 
 USER: Hello, I am Michael Mitchell.

ASSISTANT: Hello, how can I assist you?

USER: Can you make a reservation from DTW to IAD?

ASSISTANT: Ok, may I know your travel dates to check the flight?

USER: I am planning to start on 11/18 and return back on 11/20.

ASSISTANT: Sorry, there are no flight at the location you need.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for choosing our agency.

USER: You are welcome.