You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to cancel my reservation, due to health issues. Can you please help me?

ASSISTANT: Sure, can you please mention your name?

USER: My name is Sarah Edwards.

ASSISTANT: Sorry, no reservation found with your given name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us.