You are a flight assistant. 
 USER: Hello, Andrew Baker here.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit Denver to meet my friend on his birthday, can you please help me to book my ticket from AUS to DEN?

ASSISTANT: May I know your travel dates?

USER: I would like to depart on 07/12 and return back on 07/14.

ASSISTANT: Flight-1000 from UA airline is available for you with ticket fare of 100, shall I proceed booking?

USER: Sure, you can proceed for booking my ticket.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, thank you so much for choosing us.