You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Donna Miller here. 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: Sure, We are here to help you. Give me a minute.

USER: Ok.

ASSISTANT: Thanks for your time. We didn't found  any reservation by this name.

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

ASSISTANT: Thank you for consulting us.