You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Margret Lopez here.

ASSISTANT: Nice to meet you Lopez.

USER: I want to travel from DTW to JFK for attending a meeting. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, we are gleeful to help you. Can you please provide your preferable dates of travelling?

USER: My departure date is 11/29 and return date is 12/01.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok.

ASSISTANT: Sorry to inform you that, there are no flights available with your requested dates.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching us, have a great day.