Hello.
user
Hello. How could I assist you?
assistant
I am planning to change my existing reservation. Can you please help me for this?
user
Sure, may I know your name please?
assistant
Myself Michael Collins.
user
Please give me a moment.
assistant
Sure, I will wait for your kind response.
user
We did not find any reservation on your given name.
assistant
Not a big problem, anyhow thank you very much for you kind information.
user
Thank you for availing us.
assistant