You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I am planning to book a flight ticket to JFK from IAD, can you please help me out?

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, my trip dates are Aug 31 and Sept 02.

ASSISTANT: Do you need any connection limit?

USER: I am looking for a flight with 1 connection.

ASSISTANT: Is there any other specifications?

USER: My return time must be in afternoon.

ASSISTANT: May I know your name?

USER: My name is Daniel Phillips.

ASSISTANT: There are no flights available on your dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for opting us.