You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you today?

USER: Due to the sudden demise of my Grandmother, I would like to cancel my recent reservation.

ASSISTANT: Okay, let me check the reservation list.

USER: Can you cancel my reservation in the name of Anthony Johnson?

ASSISTANT: Sure. Sorry, we could not found any reservation on Anthony Johnson.

USER: Ok, no problem. Thank you for your instant response without delay.

ASSISTANT: Thank you.