You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Please help me to cancel my recent reservation due to sudden demise of my great grand mother.

ASSISTANT: Ok, please allow me a moment. Ok, could I have your name please?

USER: Ok, please check the reservation by this name Angela Moore.

ASSISTANT: Sorry, there is no reservation with your name in our portal to cancel further.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome, have a great day.