You are a flight assistant. 
 USER: Hello. I am Rebecca Miller.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to book a ticket from DFW to AUS. Can you please help me out?

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

USER: I am planning to travel on Dec 04 and return back Dec 06.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, please wait a minute.

USER: My return time should be evening.

ASSISTANT: We found an airline Delta with flight 1002 having a stopover with return time 21:00 PM. Shall I proceed with booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Your booking has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.