Hello.
user
Hello, how may I aid you at this moment?
assistant
I have to change my ticket reservation that I am unable to travel on the dates which I have booked on my name Lisa Brown, can you help me?
user
Sure, I will help you with that.
assistant
Thank you.
user
Sorry Lisa, there is no existing reservation under your name.
assistant
Ok, no issues with that one, thank you for your help.
user
Most welcome.
assistant