You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I want to cancel my recent reservation due to sudden demise of my grand father. Can you please help me with this?

ASSISTANT: Sure, I will help you about that. Can you please let me know your name for checking the reservation status?

USER: Sure, I am Donna Walker.

ASSISTANT: Sorry Donna Walker, there is no active reservation under your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.