Hello.
user
Hello, how may I help you today?
assistant
I want to change my existing reservation, can you be my helping hand to book a flight?
user
Sure, May I know your good name please?
assistant
I am James Young.
user
Ok, Please wait for a while.
assistant
Sure.
user
Thank you for waiting, There is no reservation found by your name.
assistant
Ok, Thanks for your information.
user
Thank you have a nice day.
assistant