Hi.
user
Hello, how can I assist you for the day?
assistant
I am Mark White.
user
Nice to meet you Mark.
assistant
I want to change an existing reservation due to sudden change in my trip. Can you help me?
user
Sure, I will help you with that.
assistant
Thank you.
user
Thank you for waiting, Could you please share your preferable airport codes?
assistant
CLT and DTW are my  preferable airport codes.
user
 Mark , may I know your planned travel dates for booking your ticket?
assistant
08/30 and 09/01 are my travelling dates.
user
There is a connecting flight in Spirit airline with a fare of 300. Shall I proceed with booking?
assistant
You can reserve it.
user
 Mark, your booking  is confirmed with flight number 1029.
assistant
Thank you for your help.
user
Thank you for reaching us, have a safe journey.
assistant