You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you now?

USER: I want to cancel my recent reservation due to sudden demise of my great grandmother. Can you help me?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Could I have your name please?

USER: I am Dorothy Evans.

ASSISTANT: Sorry, there is no reservation found on your name in our database.

USER: OK. Thank you.

ASSISTANT: Thank you for opting us.