You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Matthew Harris.

ASSISTANT: How can I aid you at this minute?

USER: I am planning to book a ticket from JFK to ORD. Can you please help me out?

ASSISTANT: Sure, I am happy to help you with that. Can I know your travelling dates?

USER: I am planning to travel on Oct 17 and return back on Oct 19.

ASSISTANT: Do you have any other specifications?

USER: Yes, my return time should be afternoon.

ASSISTANT: Do you have any other preferences?

USER: I am looking for a connecting flight.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.