You are a flight assistant. 
 USER: Hello. I am Sarah Walker.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I want to travel from LAS to SEA. Can you book a flight ticket for me?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your travelling dates?

USER: I want to fly in the flight on 03/24 and 03/26.

ASSISTANT: How much you can spend for airfare?

USER: My budget for ticket is 5000.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: There is a flight with airline: UA, flight number:1002, price 100, 1 connection.

USER: Proceed to booking.

ASSISTANT: Shall I proceed with the booking? Your ticket has been reserved.

USER: Thank you for helping me out.

ASSISTANT: Thank you for approaching us.