Hello.
Hello. How can I aid you?
I want to change my existing reservation, due to bad weather conditions. Can you please help me to make some modifications?
Sure, We are here to help you. May I know your name?
Sure, my name is Mary Williams.
Give me a minute.
Sure.
  Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.
Ok, thanks for your information.
Thank you for choosing us.