Hello, Catherine Taylor this side.
user
Hello, how may I guide you?
assistant
Due to sudden change in my health condition, I want to do some change in my existing reservation, can you help me?
user
Sure Catherine, hold on for a moment.
assistant
Ok.
user
I'm sorry, there are no reservations with your name.
assistant
Thank you for your fast response.
user
Thank you, have a good day.
assistant