Hello.
user
Hello. How may I aid you?
assistant
I want your guidance to change my existing reservation, as I am the doctor I have got an appointment on the day which I have planned previously.
user
Sure, I will help you to change your previous reservation.
assistant
Thank you.
user
On which name your previous reservation has been booked?
assistant
I have booked the ticket under the name Patrick Turner.
user
Sorry, no reservation found on your name.
assistant
Ok, no issues, it might have been cancelled by my assistant.
user
Ok, thank you for choosing us.
assistant
Thank you for confirmation.
user
Welcome.
assistant