You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kimberly Davis.

ASSISTANT: Davis, how can I assist you today?

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: Ok, I am here to help you. Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Davis, I did not find any reservation under your name in our database.

USER: It's ok, thank you.

ASSISTANT: My pleasure.