You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donna King here.

ASSISTANT: 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: Sure, please allow me a moment to check for the previous reservation.

USER: Ok.

ASSISTANT: Donna King, there is no reservation found under your name.

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

ASSISTANT: You are welcome. Thank you for contacting us.