Hi.
user
Hello, how can I help you?
assistant
Owing to an emergency, I need to change my existing reservation. Can you help me with that?
user
Sure, I am here to help you. Please share your name.
assistant
Sure, I have  a recent reservation with name Brenda Wright.
user
Thank you for providing your name. Sorry to say no reservation found on your name.
assistant
Ok, no worries at all.
user
Thank you for reaching us, have a nice day.
assistant
Thank you for your help.
user