You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Justin White here, I want to reserve my ticket from JFK to ORD, can you please help me out?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Ok, my willing to travel dates are from Aug, 12 to Aug, 14.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your depart time and return time?

USER: Yes, I need a return time at evening.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, that's fine. Thank you for your apprecible service.

ASSISTANT: Thank you for choosing us.