Hello.
user
Hello, how can I guide you for today?
assistant
I have an appointment with doctor on the dates of journey. So, I would like to change my existing reservation.
user
Can you please share your name to find whether your reservation is existed or not?
assistant
My name is Christine Baker.
user
Sorry, there is no reservation found under your name. Thank you for reaching us.
assistant
Ok, that's fine. Thank you for the information.
user
You are welcome.
assistant