Hi, I am Jack Walker.
user
Hello. How can I aid you?
assistant
Owing an emergence, I want to change my existing reservation. Can you please help me with it?
user
Sure, We are here to help you. Give me a minute.
assistant
Ok.
user
Thanks for your time. We didn't found any reservation by this name.
assistant
No problem, thanks for the information.
user
Thank you for choosing us.
assistant