You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my existing reservation due to postpone of my event. Can you please help me?

ASSISTANT:  Sure, I'm always here to help you. Can you please provide your good name?

USER: Sure, I am Brian Jackson.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name. Can you please help me with your travelling dates?

USER: Sure, my travelling dates are Sep 9 and Sep 11.

ASSISTANT: Ok, do you need any break in between the journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May I know your airport codes please?

USER: Sure, my airport codes are IAH and DEN.

ASSISTANT: Thank you for providing your details, we found a connecting flight with number 1024 at a price of 200 in economy class provided by Spirit airlines.

USER: You can proceed with booking.

ASSISTANT: Sure, your ticket is booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us, have a good day.