You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I would like to cancel my recent reservation due to sudden demise of my aunt. Please help me with it.

ASSISTANT: Sure, I will help you. May I know your name for the cancellation process?

USER: Sure, I am Margaret Miller.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, we found no reservation in your given name.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you for opting us. Hope to serve you again.