Hi, I am Mark Nelson.
user
Hello, how may I provide assistance to you?
assistant
I would like to change an existing reservation as my exam got postpone due to some technical issues. Can you help me with this?
user
Sure, I am here to help you.
assistant
Thank you.
user
Please wait for a while.
assistant
Sure.
user
Sorry, there is no reservation found on your name.
assistant
Ok, not an issue. Thank you for your information.
user
Thank you for reaching us.
assistant