Hi.
Hello, how may I help you?
I want to change my existing reservation which is done recently due to some problems, can you please help me?
Sure, can I know your name please?
Ok, my name is Patrick Williams.
Ok, please wait for a while.
Sure, I will wait.
Sorry Williams, there is no active reservation found with your name in our records.
Ok, no problem. I will try with the any other travelling agency.
Most welcome.