Hello.
user
Hello, how may I assist you?
assistant
I am Charles Carter. Suddenly I got a call from my manager to attend a meeting on same departure date, so I need to change my existing reservation. Can you please help me?
user
Sure, please wait for a moment.
assistant
Ok, I will wait for your response.
user
Sorry, there is no reservation found on your name in our database to change.
assistant
That's ok, no problem. Thank you for your help.
user