Hello.
user
Hello, how may I help you?
assistant
Due to some urgent conference meeting, I am willing to change my reservation. Can you please help me for this?
user
May I know your name?
assistant
Myself Robert Harris.
user
Ok, please wait.
assistant
Sure, I will wait for your response.
user
Sorry, no reservation found on your name.
assistant
Not a big problem, anyhow thank you very much for your service.
user
Thank you for reaching us.
assistant