Hello, I am Margaret Robinson.
user
Hello, how may I help you?
assistant
I need to change my existing reservation, as my exam got postponed. Please help me in changing?
user
Sure, please wait for a while.
assistant
Ok.
user
Sorry, no reservation found on your given name.
assistant
Ok, no issues.
user
Thank you for choosing us.
assistant
Thank you for your help.
user