Hi.
user
Hello, how may I be at your service today?
assistant
 I have to do some modification in my previous flight ticket booking that there is a sudden event held at my home town, so I am unable to travel the trip. can you please help me out with changing of my reservation?
user
May I know your name please to check the status of your reservation?
assistant
I am Kathleen Johnson.
user
Thank you. Please stay online for a while, I will check your reservation status and let you know.
assistant
That's ok, thank you.
user
Sorry, there is no reservation matching with your name in our portal to make changes further.
assistant
It's ok, thank you.
user
Thank you for reaching us.
assistant