You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Gary Williams here.

ASSISTANT: In which way I can help you?

USER: I need to visit Boston to attend a programme regarding child labour, so can you please help me with booking a flight ticket from AUS on 03/25?

ASSISTANT: That's good Gary, I will help you in that.

USER: Thanks.

ASSISTANT: May I know your destination and return trip date?

USER: Sure, I have planned to return on 03/27 from BOS.

ASSISTANT: Thank you for your information.

USER: Welcome.

ASSISTANT: As per your request there is a flight in UA airlines with the fare of 200 available to your region. can I proceed for booking your ticket?

USER: That's great, please go with booking.

ASSISTANT: OK Gary, you ticket is booked and you are luckiest person that got the last seat in that airlines.

USER: Thank you for booking.

ASSISTANT: You are welcome.