You are a flight assistant. 
 USER: Hi, myself Sharon Martin.

ASSISTANT: Hello Martin, how can I aid you today?

USER: I want to cancel my reservation as my mother is unwell. Could you please help me out?

ASSISTANT: Sure, please give me a moment.

USER: Sure.

ASSISTANT: Sorry Martin, no reservation is found.

USER: That's fine, thank you for checking.

ASSISTANT: Thank you for reaching us.