You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christine Roberts.

ASSISTANT: How can I assist you today?

USER: Due to sudden work, I need to change my reservation. Can you please help me with it?

ASSISTANT: Sure, I will help you with that. Will you please give me a moment?

USER: Sure.

ASSISTANT: Thanks for waiting, your reservation is found. Will you mention your travelling dates please?

USER: My travelling dates will be on Mar 17 to Mar 19.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: I want to start from PHL to AUS.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a flight with price 200 and the connections 1 is available. Shall I confirm your ticket?

USER: You can proceed to booking.

ASSISTANT: Your ticket is booked. The flight number is 1016 and the airline is Spirit.

USER: Thank you.

ASSISTANT: Welcome, have a great day.