Hello.
user
Hello. How may I help you?
assistant
I want to change my reservation, due to some problems I am unable to travel those dates, can you please change my reservation?
user
Sure, may I know your name?
assistant
Sure, my name is Christine Williams.
user
There is no previous reservation found under your name.
assistant
Oh! It's ok no problem, thank you for your information.
user
Most welcome.
assistant