Hi.
user
Hello. How may I help you?
assistant
I want to change my existing reservation due to some health issues, can you please help me/.
user
Sure. May I know your name please?
assistant
Sure, my name is Jacob Lee.
user
Thanks for waiting. But I am sorry to say that there is no reservation on your name to change it.
assistant
Ok, that's fine. Anyways, thank you for your service.
user
Thank you.
assistant