You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: My name is Brenda Harris, I want to book a flight ticket.

ASSISTANT: Sure, Brenda Harris may I know the source of your travel?

USER: Source: MI-DTW, Destination: NY-JFK.

ASSISTANT: Thank you, Could you tell us the travel dates?

USER: Sure, Departure date: Jan/1 and return date: Jan/3. I have price limit 500 and connections limit 1.

ASSISTANT: OK, Thank you, Can you please wait for a moment.

USER: OK, Sure.

ASSISTANT: Thank you for being online. Sorry to say that, we did not find any flight on your requested dates.

USER: OK, Thank you.

ASSISTANT: Thank you have a good day.