Hello, I am Mary Johnson.
user
Hello Mary, how can I assist you?
assistant
Owing to an emergency I want to change my existing reservation, can you please help me with that?
user
Sure, I can help you now. We hardly tried to find your reservation but, no reservation has been found with your name.
assistant
Ok, no issues.
user
Thanks for contacting us, have a nice day.
assistant
Thanks for your service.
user