Hi,.
user
Hello, how may I be your helping hand today?
assistant
I have planned for a trip and made a reservation yesterday. But now some friends have a problem to visit the trip. So, I want to change my reservation. Can you help me with that?
user
Sure, I can help you. May I know your name to change your reservation?
assistant
Thank you. Sure, Helen Harris is my name.
user
Sorry, we did not find any reservation on your name to change.
assistant
Ok, Not a problem. Thanks for your kind information.
user
Thank you for approaching us.
assistant