Hi.
user
Hello. How may I help you?
assistant
I want to change my reservation due to health problem, can you please help me to change my reservation which I have done last week?
user
Sure, please wait for a moment to check your details. Meanwhile, may I know your name?
assistant
Myself Robert Harris.
user
Sorry, there is no reservation found on your name. Thank you for choosing us, have a nice day.
assistant
No problem, thanks for checking.
user