Hello.
user
Hello, welcome to ABC flight ticket booking agency. How may I help you?
assistant
Due to heavy snowfall in Oakland, which I would like to visit with my friends, now I would like to change my existing reservation. Will you help me with this?
user
Sure, may I know your good name please?
assistant
My name is Rachel Hernandez.
user
Sorry to inform you that there is no previous reservation found n your name to change.
assistant
Ok, no problem, may be there is a mistake during my previous booking.
user
Thank you for approaching us.
assistant
Thank you for providing information.
user
Have a good day.
assistant