You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am looking for a flight from OAK to ORD, can you please help me in booking?

ASSISTANT: May I know your trip dates?

USER: My travelling dates are Oct 09 and Oct 11.

ASSISTANT: Do you prefer any connections?

USER: Yes, I need a connecting flight.

ASSISTANT: Any more specifications required?

USER: I want to return in afternoon.

ASSISTANT: Can you please share your name?

USER: Sure, my name is David Wilson.

ASSISTANT: There is a connected flight in Delta airlines with the fare 100.

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Thank you.