You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Richard White.

ASSISTANT: What help that I can assist you right now?

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

ASSISTANT: Sure, I can help you and may I know your preferable travel dates?

USER: My travelling dates are fro Dec 27 to Dec 29.

ASSISTANT: Do you need any other requirements?

USER: I want to depart in the afternoon time.

ASSISTANT: Please let me know if you need a connecting flight.

USER: Yes, I need a connecting flight.

ASSISTANT: I regret to inform you that non of the airlines is providing a flight on your journey dates to reserve a ticket.

USER: Ok, No issues. Thank you.

ASSISTANT: You are most welcome and thank you for approaching us.