Hello, I am Mark White.
Hello, how can I assist you today?
Due to bad weather condition, I want to change my existing reservation. Can you help me with it.
Sure, please wait for a moment, let me check your reservation and revert to you.
Sure.
Thanks for your time, sorry, unfortunately no reservation found with provided name.
OK, no issues. Thank you, for the information.
Thanks for your interest, have a nice day.