You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you please help me in booking a flight ticket from AUS to SFO?

ASSISTANT: Sure, we are gleeful to help you.

USER: Thank you.

ASSISTANT: When you are planning to make your journey?

USER: My preferable journey dates are Dec 08 and Dec 10.

ASSISTANT: Can you please mention your connection limit?

USER: I prefer direct flight for this trip.

ASSISTANT: Is there any more specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Nancy Clark.

ASSISTANT: We found a American airlines, flight number 1002, price is 100 in economy class with direct flight. Shall I proceed?

USER: Please reserve my ticket in this flight.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.