You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I would like to meet my mother on her birthday, please help me to book my flight ticket from LGA to AUS.

ASSISTANT: Sure, I am here to help you. Can I know your name?

USER: Thank you. I am Donald Lee.

ASSISTANT: Ok, do you have any connection limit preference?

USER: Yes, I prefer for a connecting flight.

ASSISTANT: Ok, can I know your travel dates please?

USER: I would like to depart on Sept 23rd and return back on Sept 25th.

ASSISTANT: Ok, do you have any more specifications?

USER: No.

ASSISTANT: I have found a flight in an American Airlines with the ticket cost of 100. Can I reserve the ticket?

USER: Yes, you can book the ticket.

ASSISTANT: I have booked your ticket with the flight-1023.

USER: Thank you so much.

ASSISTANT: You are most welcome. Thank you for choosing us.