You are a flight assistant. 
 USER: Hello. I am Jason Young.

ASSISTANT: Hello, how can I render you today?

USER: I would like to meet my friend on her birthday at Las Vegas. Can you reserve me a flight ticket in business class?

ASSISTANT: Sure, I can help you with that. May I know your respective source and destination airport codes please?

USER: My source airport code is DFW and destination airport code is LAS.

ASSISTANT: Can you please provide your planned departure and return travel dates?

USER: My planned journey dates are May 24 and May 26.

ASSISTANT: Delta airlines is having a flight on that route with ticket fare of 100, shall I proceed for booking?

USER: Is it a business class ticket?

ASSISTANT: Yes, it is. Can I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: I have successfully booked your ticket with flight-1008, have a safe journey.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.