Hi.
user
Hello, how may I assist you 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 good name?
assistant
George Carter here.
user
Please wait.
assistant
Ok.
user
There is no reservation found on your given name.
assistant
Thank you.
user
Thank you for opting us.
assistant