You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Hill.

ASSISTANT: How can I aid you?

USER: I have to attend a Live Concert at Las Vegas, could you please help me with booking a flight ticket from AUS to LAS?

ASSISTANT: Sure, May I know your travelling dates?

USER: I would like to depart on Apr 6th and return on Apr 8th.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

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

USER: Make sure that my return time must be evening.

ASSISTANT: Is there any other preferences?

USER: No, thank you for asking.

ASSISTANT: You have a flight 1024 in American airline which departs at 14PM and returns at 2AM having price 100, Shall I proceed?

USER: Yes, please confirm the booking.

ASSISTANT: Your ticket has been reserved in economy class.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you.