Hello,.
user
Hello. How can I help you today?
assistant
Can you please help me in changing my existing reservation, as my exam got postponed.
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
Sure, myself Gary Clark.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
Ok, no issues. Thank you for your help.
user
Thank you for reaching us.
assistant