Hello.
user
Hello, how may I render you now?
assistant
 I am Kevin Green want to cancel my reservation due to prepone of my semester exams. Can you help me in cancelling?
user
Sure, I will help you with that. Please wait for a minute.
assistant
 Ok.
user
Thank you for waiting, there is no reservation found on your name.
assistant
Ok, no issues. Thank you for your response.
user
Thank you for reaching us.
assistant