Hi.
user
Hello, how may I help you?
assistant
Could you please help me in changing my existing reservation?
user
Sure, please share your name to proceed.
assistant
My name is Catherine Johnson.
user
Please wait for a while to check your details.
assistant
Ok.
user
Sorry to say, I did not found any reservation found on your name.
assistant
That's ok, thank you for the response.
user
Thank you for reaching us.
assistant