Hello, I am Samantha Thomas.
user
Hello, how may I assist you?
assistant
Owing to an emergency I want change my existing reservation, can you please help me with that?
user
Sure, please wait a moment I'll check the details of your reservation.
assistant
Sure.
user
Sorry to say, didn't found any details regarding your reservation.
assistant
Ok, no problem.
user
Thanks for availing us, have a pleasant day.
assistant
Thanks for your service.
user