You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carol Robinson.

ASSISTANT: How may I serve you today?

USER: Can you help me in booking from AUS to SFO?

ASSISTANT: Sure, please kindly share your travel dates.

USER: My travelling dates are from Dec 11 to Dec 13.

ASSISTANT: Do you need a stopover?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Do you have any specific depart and return time for this trip?

USER: I want to return in evening.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: I found an economy class ticket in United Airlines with fare 100 and it is a connecting flight. Can I book your ticket?

USER: Ok, You can proceed.

ASSISTANT: Your booking is done with flight number 1013 and your arrival time is 0:00 AM.

USER: Thank you.

ASSISTANT: Thank you for choosing us.