Hello.
user
Hello, how can I aid you for today?
assistant
Myself Mark Nelson. I am planning to change my reservation. Can you please help me for this?
user
Sure, I will help you with that Mark Nelson.
assistant
Sure, I will wait for your kind response.
user
Sorry to say this Mark Nelson, there is no active reservation with your name to change your reservation.
assistant
Not a big problem,. anyway thank you very much for your service.
user
You are welcome, thank you for reaching us.
assistant