You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from OAK to PHL, can you help me in booking a flight ticket?

ASSISTANT: May I know your journey dates?

USER: Sure, my journey dates are Feb 19 and Feb 21.

ASSISTANT: Is there any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Do you have any other requirements?

USER: I would prefer depart time at afternoon.

ASSISTANT: Can I have your good name?

USER: Sure, Scott Walker here.

ASSISTANT: Delta Airlines providing direct flight in the economy class with fare 100, shall I proceed for booking?

USER: Yes, you can.

ASSISTANT: Your ticket has been confirmed with flight number 1018.

USER: Thank you for your assistance.

ASSISTANT: Thank you.