You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am John Hall.

ASSISTANT: How shall I help you?

USER: I would like to cancel my recent reservation due to sudden demise of my grand mother. Can you help me with that?

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: No reservation found. Thank you.

USER: Ok, no issues.