Hello.
user
Hello, how can I aid you today?
assistant
Is it possible for you to change my existing reservation?
user
Yes, it is possible.
assistant
Ok.
user
May I know on whose name the ticket has been reserved formerly?
assistant
My name is Ruth Johnson.
user
Sorry Ruth Johnson, there are no flights reserved on your given name formerly.
assistant
No problem, thank you for checking it.
user
Welcome, thank you for choosing us. Have a great day.
assistant