Hello.
user
Hello, how may I help you today?
assistant
 I am Jonathan Lewis want to change my reservation due to heavy snow storm. Can you help me in changing my reservation?
user
Please wait for a while, let me check and get back to you.
assistant
Ok.
user
Unfortunately, there is no reservation found with your given name.
assistant
Thank you for your help.
user
Thank you for visiting us.
assistant