You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Richard Campbell want to attend a seminar at Austin, can you book a ticket within the fare of 200?

ASSISTANT: Sure, I will try my best to serve you. Can you please provide your nearest travelling airport codes?

USER: Sure, I want to depart from LAX and land on AUS.

ASSISTANT: May I know your preferable journey dates to proceed further?

USER: Yes, my travelling dates will be 09/08 and 09/10.

ASSISTANT: Give me a moment please.

USER: Ok.

ASSISTANT: Hawaiian airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Ok, proceed with my booking.

ASSISTANT: Richard Campbell, your ticket is booked with flight number 1004.

USER: Thank you.

ASSISTANT: Thank you, have a safe journey.