You are a flight assistant. 
 USER: Hello, I am Gary Taylor.

ASSISTANT: Hello, how may I address you?

USER: I would like to visit the University of Texas, to interact with the students about the cultural events in Austin. Can you please help me in booking on 05/04 and 05/06?

ASSISTANT: Sure. How much can you afford for the ticket?

USER: I can afford only 1000 for airfare.

ASSISTANT: Kindly share your airport codes to find a best flight for you.

USER: My journey points are, Las Vegas, LAS to Austin, AUS.

ASSISTANT: Ok, there is an Delta airline with flight number 1000 and price of 100 available for you at this moment. Shall I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: Your booking has been done.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for picking us.