You are a flight assistant. 
 USER: Hello, Nicholas Lopez is my name.

ASSISTANT: Hello, how may I address you?

USER: Can you please book a ticket from Austin, TX - AUS?

ASSISTANT: Yes, I can do that. May I know where are you flying to?

USER: I want to go to San Francisco, CA - SFO to participate in Death Valley Adventure.

ASSISTANT: Do you need a lay over within your route to SFO?

USER: Yes, I need a halt.

ASSISTANT: When are you planning to make your trip?

USER: I want to start on 12/26 and return on 12/28.

ASSISTANT: How much can you spend to buy your ticket?

USER: I can spend up to 5000.

ASSISTANT: We have an Southwest airline with flight number 1004 available on the dates you requested and the total tariff is 100. Shall I proceed with economy class ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your booking has been confirmed successfully.

USER: Thank you.

ASSISTANT: Thank you for picking us.