Hello.
user
Hello, how can I assist you today?
assistant
I would like to change my reservation due to some health issues, will you help me?
user
Sure, may I know your good name?
assistant
Sure, my name is John Thomas.
user
Please wait for a moment.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
It's Ok, thanks for your support.
user
Thank you for reaching us.
assistant