Hello.
user
Hello. How may I guide you?
assistant
I want to change my reservation, because my trip was postpone due to some problems, can you please change my reservation?
user
May I know your name?
assistant
Sure, my name is Emily Parker.
user
Sorry Emily, there is no previous reservation found with your name.
assistant
Oh! It's ok no problem. Thank you for your information.
user
Most welcome.
assistant