Hello.
Hello. How may I aid you today?
I want to change my existing reservation which is done recently due to some problems, can you please help me?
Sure, I am glad to help you to change your reservation.
Thank you.
Could you please tell me your name?
Sure, my name is Margaret Miller.
Sorry, no reservation found on your name to change.
Ok, that's fine. Thank you for your service.
Welcome, thank you for checking.