Hello, myself Helen Martin.
Helen, how can I help you?
I would like to change my reservation, as I have got an urgent project work. Can you please help me with this?
Sure, I will help you. Please wait for a while.
Sure.
Sorry Helen, there is no reservation found on your name.
Sure, thank you for checking.
Do you have any other preferable dates?
No, thank you for helping me.
You are welcome.