You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Planning to attend a comic con in Las Vegas on Apr 24th, could you please help me to book a flight ticket?

ASSISTANT: Yes, can you share me your nearest airport codes?

USER: I would like to start my journey from AUS and my destination airport code is LAS.

ASSISTANT: Can you tell me your return date?

USER: I'll return within two days that is on Apr 26th.

ASSISTANT: Do you have any other preferences?

USER: No, I don't have any other preference.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 200 and 1 connection.

USER: Yes, you can proceed with the booking.

ASSISTANT: Can I know your name for booking?

USER: Please book the ticket with the name Sharon Thomas.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service in booking.

ASSISTANT: Thank you for contacting us.