Hello.
user
Hello, how may I help you?
assistant
 I am Patricia Young want to change my reservation due to prepone of my exams. Can you please help me with it?
user
Sure, I will help you. Please wait a while. I will get back to you.
assistant
Ok.
user
Thanks for waiting. There was no reservation found on your name.
assistant
Thank you for your help.
user
Thank you for reaching us.
assistant