Hi.
user
Hello, how may I help you today?
assistant
 I have some personal matters that need fixing so I need to change an existing reservation. Can you please help me out?
user
Sure, please wait for a moment. May I know your name?
assistant
Please check the details on the name Alexander Harris.
user
Sorry, no reservation found with your name.
assistant
Ok, no worries. Thank you.
user
Thank you for opting us.
assistant