You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Good evening.

USER: Myself Donald Clark.

ASSISTANT: How can I assist you Donald?

USER: Due to a sudden death of my friend, I would like to cancel my reservation.

ASSISTANT: Sorry to hear this. Please wait a minute. Donald, there is no reservation found with your details.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.