You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Owing to an emergency, I need to cancel my reservation, can you please help me out?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Sorry, I want to change my reservation. My name is Raymond  Allen.

ASSISTANT: Nothing to worry, I will help you. Please allow me a minute.

USER: Thank you. Sure.

ASSISTANT: Thank you. I have found your reservation details. Please let me know with your preferred travelling dates.

USER: Ok, my travelling dates are, start on Nov 25th and arrival on 27th of November.

ASSISTANT: Please help me with your depart and arrival airport codes.

USER: My airport codes are, OAK to LAS.

ASSISTANT: Do you need a break in between your journey?

USER: Yes, I need a break, so I prefer a connecting flight in my journey.

ASSISTANT: Do you have any other preferences in your journey?

USER: I don't have any other preferences.

ASSISTANT: We have a connecting flight operated by Spirit Airlines with a fare of 100 only. Shall I book the flight ticket?

USER: Ok, that's prefect, please proceed with this airlines.

ASSISTANT: I have booked your ticket in the flight-1027.

USER: Thank you for changing my reservation as per my request.

ASSISTANT: I am happy to help you today. Thank you for reaching us. Have a great time.