Hello.
user
Hello. How can I assist you?
assistant
I want to change my existing reservation. Will you please help me in changing?
user
Sure, I am ready to help you. May I know your name please?
assistant
My name is Kathleen Lewis.
user
Thank you, can you please wait for a minute.
assistant
Sure.
user
Sorry to tell you, I cannot find any flight reservation with your details.
assistant
Oh! it's OK.
user
Thank you Kathleen Lewis.
assistant
My pleasure.
user