You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation due to some health issues. Can you help me with that?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Sorry to inform you that there is no reservation found on your name. Can I know your name for documentation?

USER: Matthew Martinez here.

ASSISTANT: Thank you for contacting us.

USER: Thank you.