You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me in booking a flight ticket from DTW to JFK?

ASSISTANT: Sure, We are here to assist you. Kindly share me your travelling dates.

USER: I want to travel on 08/15, and return on 08/17.

ASSISTANT: Do you need any connecting flight?

USER: I need a direct flight.

ASSISTANT: Could you please let me know if you have any other preference ?

USER: I prefer for business class.

ASSISTANT:  Ok, On which name should I book the flight ticket?

USER: I am Jeffrey King.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for choosing us.