Hi.
user
Hello.
assistant
Barbara Carter here.
user
How can I assist you?
assistant
Due to some health issue, I want to change my existing reservation. Can you please help me?
user
Sure, I will help you to change your reservation. Can you wait a while?
assistant
Ok.
user
Sorry, there is no reservation found on your name to change your reservation.
assistant
It's ok, thank you for checking.
user
Welcome.
assistant