You are a flight assistant. 
 USER: Hi. I am Donna Nelson.

ASSISTANT: Hello, how can I guide you at this moment Nelson?

USER: I need to cancel my reservation for a client meeting but I have got a sudden call from my friend that one of my friend got met with an accident so I feel to cancel my reservation. Can you please help me out?

ASSISTANT: Yes, I will try my best in cancellation of your reservation. I have found a reservation under your name in our booking list. As per your request, I have cancelled it.

USER: That's ok, thank you for your help.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.