Hi.
user
Hello. How can I help you?
assistant
Can you please help me in changing my  previous reservation that I have made earlier to attend an event at my home town?
user
Ok, please wait. May I know your name?
assistant
I am Eric Roberts.
user
Sorry, no reservation found on your name.
assistant
Ok, no problem. Thanks for your response.
user
 Thank you for availing us.
assistant