Hi.
user
Hello, how may I aid you today?
assistant
Will you please help me in changing my existing reservation?
user
Sure, may I know your name please?
assistant
Joseph Hill.
user
Wait a moment.
assistant
Sure.
user
 Thank you for waiting, there is no reservation found for the user name in our data base to change your previous booking.
assistant
No issues, thank you for your information.
user
Thank you for reaching us.
assistant