You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: Jerry Green here. Can you please help me in booking a flight ticket from DCA to EWR?

ASSISTANT: Sure, let me know your planned journey dates.

USER: Sure, my planned travel details are from Oct 15 to Oct 17.

ASSISTANT: Is there any stopover in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you prefer a economy class or business class?

USER: Yes, I prefer economy class.

ASSISTANT: Ok, Can I know your depart and arrival timings?

USER: I would like to depart in the evening.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.