You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,how can I help you?

USER: One of my family member met with an accident and lost her one of the part in her body, so I would like to travel to LAS is there any person can donate that part, can you find a flight from AUS?

ASSISTANT: Sure, may I know your travelling dates?

USER: It is very urgent situation , so, my dates would be 03/28 and back on 03/30.

ASSISTANT: May I know your price limit?

USER: Yes, my budget is 1000.

ASSISTANT: There is a Southwest 1020 airline which matches your requirements. Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your booking has been confirmed.

USER: Ok, thank you for your hand help in my booking.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.

ASSISTANT: May I know your name?

USER: My name is Charles White.