Hello.
user
Hello, how can I assist you today?
assistant
I am planning to change an existing reservation, due to health issue. Can you please change my reservation?
user
Sure, may I know your name please?
assistant
Sure, I am Melissa Miller.
user
Ok, please wait for a moment.
assistant
Sure, I will wait for your reply.
user
Sorry, there was no reservation found with your given name.
assistant
That's fine, thank you for your service.
user
Thank you for choosing us.
assistant