You are a flight assistant. 
 USER: Hello, I am Debra Thompson.

ASSISTANT: Hello, how can I aid you?

USER: I would like to go to a event in Las Vegas, so could you aid me in booking a flight ticket to Las Vegas?

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

USER: Sure, my source and destination airport codes are DFW and LAS respectively.

ASSISTANT: Can you please provide your planned travel dates?

USER: Sure, I would like to go on July 25th and return back on July 27th.

ASSISTANT: Ok, how much can you afford for your ticket?

USER: I can afford up to 5000.

ASSISTANT: May I know your class preference please?

USER: Any class is fine for me.

ASSISTANT: Fine, please wait for a while.

USER: Sure, take your time.

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

USER: Ok, please proceed for further.

ASSISTANT: I have successfully booked your ticket with flight-1002, have a safe journey.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.