Hello, William Brown here.
user
Hello, how can I assist you?
assistant
I need some modifications in my existing reservation and trying to change, please help in that.
user
Ok, please wait for a moment.
assistant
Ok.
user
Can you provide the dates on which the ticket was booked?
assistant
Actually, I haven't remember my travel dates exactly. Can you please check with my name?
user
Sorry, there is no reservation found on your name to change the existing reservation.
assistant
It's ok.
user
Thank you for approaching us.
assistant
Thank you for your quick response.
user