Hello.
user
Hello. How can I help you today?\.
assistant
 I am David Mitchell want to change my reservation due to heavy snow fall. Can you help me in changing?
user
Sure, I am here to help you. Please hold on.
assistant
Ok.
user
Thanks for being patient, there is no active reservation found on your name to change.
assistant
Ok, no issues. Thank you for your help.
user
Thank you for availing us.
assistant