You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I am Anthony Perez. Could you help me in booking a flight ticket from Austin to Las Vegas within a price limit of 200?

ASSISTANT: Sure, may I know your travelling dates?

USER: My departure day is 04/14, return day is 04/16.

ASSISTANT: Can you please confirm your airport codes?

USER: My source and destination airport codes are TX - AUS, NV - LAS.

ASSISTANT: Do you have any preference to make your journey more comfortable?

USER: I need a halt in between my journey.

ASSISTANT: Please wait, while I work on your booking.

USER: Sure.

ASSISTANT: I see a flight from Delta airline flight number 1017 with fare 100. Shall I confirm?

USER: You can proceed to booking.

ASSISTANT: You ticket is confirm.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a nice time.